Is your Samsung TV stuck in a reboot loop? Learn how to fix Samsung TV keeps rebooting issues with our complete guide covering software fixes, HDMI-CEC solutions, hardware diagnosis, and model-specific troubleshooting for QLED, Frame TV, and Crystal UHD.
Samsung TV just restarted for the fifth time in an hour. The movie you were watching? Gone. That perfectly timed snack break? Ruined. The frustration of watching the Samsung logo appear yet again is something thousands of Samsung TV owners experience every day.
Here's the good news: most Samsung TV restart issues can be fixed without calling a technician or spending a dime. After troubleshooting hundreds of these cases and analyzing patterns from Samsung Community forums, repair shops, and user reports, I've compiled everything you need to diagnose and fix your Samsung TV's rebooting problem.
This guide covers every scenario - from a 60-second quick fix to complete hardware diagnosis. Whether you own a brand-new Neo QLED or an older Crystal UHD model, you'll find your solution here.
Before diving into detailed troubleshooting, try these quick fixes that resolve approximately 40% of Samsung TV restart issues:
With your TV powered on, press and hold the Power button on your Samsung remote for 10 seconds
Keep holding until the TV turns off completely
Wait for the Samsung logo to reappear
Release the button once the TV begins restarting
If the remote method doesn't work, proceed to the power cycle method below.
Turn off your TV using the remote or power button
Unplug the TV from the wall outlet - not just the power strip, the actual wall socket
Wait exactly 60 seconds (this timing is critical; it allows capacitors to fully discharge)
Press and hold the power button on the TV itself for 30 seconds while unplugged
Plug directly into a wall outlet, bypassing any power strips or surge protectors temporarily
Turn the TV on and observe for 10-15 minutes
This cold boot procedure clears residual electrical charge that causes many software-related restart loops.
Answer these questions to determine your next steps:
Does your TV restart every few seconds with a clicking sound? → Skip to Hardware Diagnosis (Section 7)
Does your TV restart only when using specific apps like Netflix or YouTube? → Go to Software Fixes (Section 4)
Did the problem start after connecting a new soundbar or gaming console? → Jump to HDMI-CEC Troubleshooting (Section 6)
Is your TV stuck showing the Samsung logo repeatedly? → See Boot Loop Solutions (Section 5)
Does your TV restart after 15-30 minutes of use? → Check Overheating and Hardware (Section 7)
If the quick fixes resolved your issue, excellent - you're done. If your Samsung TV keeps restarting, continue reading for a comprehensive Samsung TV troubleshooting approach that addresses every possible cause.
A Samsung TV that keeps restarting isn't just annoying - it's a symptom of an underlying issue that won't resolve itself. Understanding what's happening inside your TV helps you target the right solution faster.
Samsung Smart TVs run on Tizen OS, a proprietary operating system that, like any computer, can experience software crashes, memory overflow, and system conflicts. This affects Samsung TVs manufactured from 2015 through 2026 across all model lines - QLED, Neo QLED, Crystal UHD, Frame TV, and older LED/LCD models.
The restart behavior typically falls into one of four categories, each with different root causes and solutions.
Based on analysis of Samsung Community forums, repair shop data, and JustAnswer expert consultations, here's how the causes break down:
Software/Firmware Issues (40% of cases) Outdated firmware, corrupted Smart Hub data, app cache overflow, or failed automatic updates. These typically cause random or intermittent restarts and are the easiest to fix.
HDMI-CEC/External Device Conflicts (25% of cases) Connected devices sending problematic power commands via HDMI-CEC (Samsung calls this Anynet+). Soundbars, gaming consoles, and streaming sticks are common culprits. Many users don't realize their Samsung TV turns on by itself due to CEC signals from other devices.
Power Supply Issues (20% of cases) Unstable wall outlet voltage, failing power strips, loose connections, or degrading internal power board components. Older Samsung TVs (2010-2018) are particularly susceptible to capacitor failure.
Hardware Component Failure (15% of cases) Failing capacitors, mainboard processor issues, T-Con board failures, or ribbon cable disconnections. These typically cause rapid cycling (every few seconds) and require professional diagnosis.
Most online guides cover two or three basic steps and leave you hanging when those don't work. This guide follows the complete troubleshooting path - from the simplest software fix to hardware-level diagnosis - so you can definitively solve your problem or know exactly when professional help is needed.
Your Samsung TV freezing or restarting randomly often shares common causes with other Smart TV issues, so fixing one problem frequently prevents others.
Different restart patterns point to different problems. Identifying your specific symptom pattern saves hours of trial-and-error troubleshooting.
What You See: TV turns off and on repeatedly in quick succession. Samsung logo appears briefly, then the screen goes black. Often accompanied by a clicking sound from inside the TV.
What It Means: This pattern strongly indicates power supply or capacitor failure. The TV is attempting to start but can't maintain stable power delivery.
Most Likely Cause: Power supply board component failure, typically blown or bulging capacitors.
Next Steps: Jump directly to Hardware Diagnosis (Section 7) and DIY Repair (Section 9).
What You See: TV works normally when first turned on, then restarts after extended use. The problem often worsens as the TV warms up. May improve if you give the TV a long rest period.
What It Means: Heat-related component failure. As internal components warm up, a weakened capacitor or thermal protection circuit triggers a shutdown.
Most Likely Cause: Overheating due to poor ventilation, dust accumulation, or heat-sensitive component starting to fail.
Next Steps: Check ventilation immediately, then proceed to Hardware Diagnosis (Section 7).
What You See: TV restarts unpredictably. May happen during specific activities - streaming, app switching, HDMI input changes - or at seemingly random times. No consistent pattern.
What It Means: Likely software or external device related. Something is triggering a crash or sending improper commands to your TV.
Most Likely Cause: Software glitch, HDMI-CEC conflict, firmware bug, or app instability.
Next Steps: Start with Software Fixes (Section 4), then HDMI-CEC Troubleshooting (Section 6).
What You See: TV stuck showing Samsung logo repeatedly. Never reaches home screen. May show loading spinner briefly before restarting.
What It Means: Firmware corruption, failed software update, or in severe cases, mainboard failure preventing the TV from completing its boot sequence.
Most Likely Cause: Corrupted system files, Smart Hub data corruption, or mainboard NAND flash failure.
Next Steps: Go to Boot Loop Solutions (Section 5). If the TV sometimes shows a loading circle before restarting, you're likely dealing with the same underlying issue.
What You See: TV only restarts when using specific apps (Netflix, YouTube, Disney+, Prime Video) or features. Works fine otherwise.
What It Means: Corrupted app data, memory management issue, or app-specific bug.
Most Likely Cause: App cache corruption or insufficient memory allocation.
Next Steps: Start with App Cache Clearing in Section 4. If you're experiencing Samsung TV streaming issues alongside restarts, clearing cache typically resolves both.
Ask yourself when this started:
After a firmware update? → Section 5 (Firmware/Factory Reset)
After a power outage or storm? → Section 7 (Hardware - possible surge damage)
After connecting a new device? → Section 6 (HDMI-CEC)
Problem gradually worsened over weeks/months? → Section 7 (Hardware degradation)
Happened suddenly with no changes? → Start with Section 4 (Software), then progress through
Understanding why these problems occur helps you prevent future issues and choose the right fix. Here's a comprehensive breakdown of every documented cause.
Outdated Firmware with Known Bugs Samsung regularly releases firmware updates that fix stability issues. Running old firmware means you're vulnerable to bugs that have already been patched. Some specific firmware versions have documented restart issues that were resolved in subsequent updates.
Corrupted Smart Hub Data Smart Hub is Samsung's app platform. Over time, app data, cached files, and configuration settings can become corrupted, especially after interrupted updates or power losses. This corruption can cause the entire TV system to crash during startup.
App Cache Overflow Individual apps store temporary data that accumulates over time. When cache storage exceeds certain thresholds, apps can become unstable and trigger system-wide crashes. Netflix, YouTube, and streaming apps are common culprits due to their heavy cache usage.
Failed Automatic Updates Samsung TVs attempt to update automatically during standby. If an update is interrupted by a power fluctuation or network drop, partially installed firmware can cause boot loops or random restarts.
This category deserves special attention because it causes approximately 25% of restart issues yet receives minimal coverage in most troubleshooting guides.
What is HDMI-CEC? HDMI Consumer Electronics Control allows devices connected via HDMI to control each other. When you turn on your PlayStation, CEC can automatically turn on your TV. Convenient - when it works.
Soundbar ARC/eARC Handshake Failures Audio Return Channel (ARC) combined with CEC creates a communication loop between your TV and soundbar. Handshake failures during this process can trigger restart commands. Many users report their TV restarting specifically when adjusting volume or switching audio modes. If you're having issues setting up audio, check our guide on how to connect soundbar to Samsung TV properly.
Gaming Console CEC Conflicts PlayStation 5, Xbox Series X|S, and Nintendo Switch all support CEC with varying levels of compatibility. The PS5's HDMI Device Link and Xbox's Device Control features can send signals that Samsung TVs misinterpret as restart commands.
Streaming Device Issues Fire TV Stick, Chromecast, and Apple TV all have CEC functionality. Fire TV Stick is particularly problematic - its aggressive CEC implementation frequently conflicts with Samsung's Anynet+. If your Firestick isn't working with your Samsung TV, CEC conflicts are often the cause.
Daisy-Chain Confusion When multiple CEC-enabled devices are connected (soundbar + game console + streaming stick), CEC signals can bounce between devices unpredictably, creating a cascade of commands that ultimately restart the TV.
Unstable Wall Outlet Voltage Voltage fluctuations from your electrical system - common in older homes or during peak usage times - can trigger protective shutdowns that manifest as restarts.
Failing Power Strips and Surge Protectors Ironically, old surge protectors can cause power instability. Worn-out surge protectors may introduce voltage drops or fail to provide clean power delivery. If your surge protector is more than 3-5 years old, it may be contributing to the problem.
Loose Power Cord Connections A power cord that's not fully seated - or one where the outlet's grip has loosened over time - creates intermittent connections that the TV interprets as power cycles.
Internal Power Board Degradation The power supply board converts wall power into the various voltages your TV needs. Components on this board, particularly capacitors, degrade over time and can cause power delivery instability.
Capacitor Failure (Common in 2008-2018 Models) Samsung released certain TV models with underrated capacitors that fail prematurely. Symptoms include bulging or leaking capacitor tops (visible when you remove the back panel), clicking sounds, and rapid power cycling. According to Witonics repair data, this affects numerous Samsung models from this era.
Mainboard Issues The mainboard (motherboard) processes all TV functions. Failing components on this board can cause progressive system instability, typically manifesting as restarts that worsen over time.
T-Con Board Problems The T-Con (Timing Controller) board controls the LCD panel. When it begins failing, you may see visual artifacts (lines, discoloration) immediately before a restart.
Ribbon Cable Issues (Frame TV Specific) Samsung Frame TVs use ribbon cables between the display and One Connect box. These cables can become loose or damaged, causing intermittent connection drops that trigger restarts. Samsung Community forums document this as a known issue with Frame TV models.
Overheating from Poor Ventilation Samsung TVs need adequate airflow around their vents - typically located on the back and sides. Wall-mounted TVs with insufficient clearance or TVs placed in enclosed entertainment centers often overheat.
Dust Accumulation Dust blocking ventilation slots forces internal components to run hotter. Over years of use, dust buildup inside the TV can reach levels that significantly impact cooling efficiency.
Proximity to Heat Sources Placing your TV near radiators, fireplaces, in direct sunlight, or above heat-generating equipment (like cable boxes or receivers) contributes to overheating issues.
Understanding these causes helps you target your troubleshooting. For audio-related device connections that might be causing issues, you can also learn how to connect external speakers to Samsung TV without HDMI-CEC complications. Additionally, if you notice your TV exhibiting Samsung TV Anynet settings conflicts, addressing these proactively prevents future restarts.
Software issues cause approximately 40% of Samsung TV restart problems. The good news? These are the easiest to fix yourself, requiring no tools and no technical expertise.
Work through these solutions in order - they're arranged from least disruptive to most comprehensive.
The quick fix section covered this briefly, but here's the complete procedure with important details most guides miss:
With the TV ON, press and hold the power button on your remote for 10 seconds
The TV will turn off, pause briefly, then display the Samsung logo as it restarts
This is different from simply pressing power - it forces a complete system restart rather than entering standby
If the remote method doesn't work:
Locate the physical power button on your TV (usually on the bottom edge, back-right, or side)
Hold it for 10-15 seconds
Why this works: A cold boot clears the TV's RAM and resets any stuck processes, similar to rebooting a frozen computer.
Turn off the TV and unplug it from the wall outlet
Wait exactly 60 seconds - this isn't arbitrary; it's the time required for internal capacitors to fully discharge
While unplugged, press and hold the TV's physical power button for 30 seconds
Plug directly into a wall outlet (bypass power strips for testing)
Turn on and observe
Why this works: Drains residual electrical charge that can cause software states to persist even when the TV appears "off."
This is the single most effective fix for intermittent restarts - and most people don't try it:
Navigate to Settings (gear icon)
Select General (or Connection on newer models)
Choose External Device Manager
Find Anynet+ (HDMI-CEC) and turn it OFF
After disabling, test your TV for several hours. If restarts stop, one of your HDMI devices was sending problematic CEC commands. You can then re-enable Anynet+ and systematically identify which device is the culprit (covered in Section 6).
If you need to reset HDMI ports on your Samsung TV as part of this process, that can help clear any stuck handshake states.
Samsung's power-saving features can mimic or trigger restart behavior:
Go to Settings → General (or General & Privacy)
Select Eco Solution (or Power and Energy Saving)
Disable these options:
Auto Power Off
Energy Saving Mode
Motion Lighting (adjusts brightness based on content)
Why this matters: Auto Power Off can turn your TV off unexpectedly, which may appear as a restart when the TV auto-powers back on via CEC from a connected device.
Sometimes "restarts" are actually the TV following scheduled power settings:
Go to Settings → General → System Manager → Time
Check Sleep Timer - set to Off if a timer is active
Check On Timer and Off Timer - disable both if active
These settings can cause the TV to power off at specific times, creating the impression of random restarts.
This clears app data and Smart Hub configuration without erasing your TV settings:
Navigate to Settings → Support
Select Device Care (or Self Diagnosis on older models)
Choose Self Diagnosis → Reset Smart Hub
Enter your PIN when prompted (default is 0000)
Confirm the reset
After resetting, you'll need to sign back into apps and reconfigure Smart Hub, but your picture settings, network configuration, and other TV settings remain intact.
Why this works: Corrupted Smart Hub data is a leading cause of random restarts. Resetting clears potentially corrupted files while preserving your core TV configuration.
Network-related issues can cause restarts, particularly if the TV constantly fails connection attempts:
Go to Settings → General → Network
Select Reset Network
Confirm the reset
Reconnect to your WiFi network afterward
Alternative DNS Settings: Some users report improved stability after changing DNS settings:
Settings → General → Network → Network Settings
Select your network and choose IP Settings
Change DNS from Automatic to Manual
Enter Google DNS: 8.8.8.8 or 8.8.4.4
If your Samsung TV is buffering along with restarting, network optimization often addresses both issues. Similarly, if you're experiencing no signal problems after restarts, network and connection resets often resolve both.
For restarts that only happen during specific app use:
Navigate to Settings → Support → Device Care
Select Manage Storage
Find the problematic app (Netflix, YouTube, etc.)
Select the app and choose Clear Cache
If that doesn't help, try Clear Data (you'll need to sign in again)
For apps that consistently cause problems, uninstall and reinstall them:
Go to Apps
Select the problematic app
Choose Delete or Remove
Reinstall from the Samsung App Store
Learning to properly close apps on Samsung TV and manage running applications can also prevent memory-related restarts.
When your Samsung TV is stuck on the logo or caught in a boot loop, you need more aggressive solutions. This section covers firmware recovery and factory reset procedures, including methods for TVs that won't stay on long enough to access menus.
If your TV stays on long enough to access settings:
Go to Settings → Support → About This TV
Note the current Software Version
Compare to the latest version available on Samsung's support website for your model
For TVs with intermittent restarts (not complete boot loops):
Connect your TV to the internet via WiFi or Ethernet (Ethernet is more stable)
Navigate to Settings → Support → Software Update
Select Update Now
Wait for the download and installation - do NOT turn off the TV during this process
If the update keeps failing, your TV may not be stable enough for OTA updates. Proceed to USB update method.
This method can rescue a TV stuck in a boot loop when the TV won't stay on long enough for an OTA update:
Step 1: Download the correct firmware
Find your exact model number (printed on the back of the TV or on the original box)
Go to Samsung's support website: samsung.com/support
Enter your model number and navigate to Downloads → Firmware
Download the latest firmware file
Step 2: Prepare the USB drive
Use a USB drive formatted as FAT32 (this is critical - NTFS won't work)
Extract the downloaded firmware ZIP file
Place the extracted files in the root directory of the USB drive - not inside any folders
The folder structure should look like: USB Drive → firmware folder directly visible
Step 3: Install via USB
Insert the USB drive into your Samsung TV's USB port
Navigate to Settings → Support → Software Update → Update Now
The TV should detect the USB drive and begin the update
Wait for completion - the TV will restart automatically
For TVs stuck in boot loops that can't access settings: Some Samsung models will automatically detect and install firmware from a USB drive during boot. Try this:
Unplug the TV for 2 minutes
Insert the prepared USB drive
Plug the TV back in
The TV may automatically begin firmware installation
Keeping your Samsung TV firmware updated regularly is one of the best preventive measures against restart issues.
If software fixes haven't worked and the TV is accessible:
Navigate to Settings → General & Privacy (or just General)
Select Reset
Enter your PIN (default: 0000)
Confirm the reset by selecting Reset again
Warning: Factory reset erases ALL settings, apps, accounts, and preferences. Note your WiFi password, app logins, and picture settings before proceeding.
After reset, set up your TV fresh. Don't restore from backup immediately - add apps one at a time to identify any that might be causing instability. For help with the initial configuration, see our Samsung TV setup guide.
If you can't use the remote or access menus:
Method 1: Power button hold
Locate the physical power button on your TV
With the TV off, press and hold the power button for 15-20 seconds
Some models display a reset confirmation - continue holding through the process
Method 2: Button combinations (varies by model)
Some models: Hold Volume Down + Channel Down buttons simultaneously while powering on
Others: Hold Menu + Volume Down for 15 seconds
Check your specific model's manual for the correct combination
If your TV shows the home screen briefly before restarting:
As soon as the home screen appears, quickly navigate to Settings
Race to Support → Self Diagnosis → Reset
If you can't get there in time, try holding the EXIT button on your remote for 12 seconds while the TV is on - this triggers factory reset on some models
Alternative service menu method (use with caution):
With the TV off, press: Mute → 1 → 8 → 2 → Power on your remote
This may access the service menu where reset options are available
Warning: Service menus contain settings that can permanently damage your TV if changed incorrectly - only use the reset option
After a factory reset:
Don't restore from backup immediately - set up as a new TV
Complete initial setup and connect to WiFi
Let the TV sit for 10-15 minutes to check stability
Install apps one at a time, testing stability between each
Only enable Anynet+ if you specifically need CEC functionality
Monitor for 24-48 hours before considering the problem resolved
If your TV gets stuck on the setup screen after a factory reset, that's a separate issue that may indicate deeper firmware corruption.
HDMI-CEC issues cause approximately 25% of Samsung TV restart problems, yet most troubleshooting guides barely mention them. This section provides comprehensive HDMI-CEC diagnosis and resolution.
HDMI-CEC (Consumer Electronics Control) allows devices to control each other through HDMI cables. Samsung's implementation, called Anynet+, lets you control soundbars, gaming consoles, and streaming devices with your TV remote.
The problem? CEC implementations vary wildly between manufacturers. When your Samsung TV receives a malformed or unexpected CEC command, it can interpret it as a power cycle request - triggering a restart.
Before troubleshooting specific devices, confirm that HDMI-CEC is actually your issue:
Turn off your TV completely
Disconnect ALL HDMI devices - soundbar, streaming stick, gaming console, cable box, everything
Unplug the TV for 60 seconds
Reconnect only the power cord - no HDMI devices
Power on and test for at least 30 minutes
If your TV runs without restarting while nothing is connected via HDMI, one of your external devices is causing the problem. If it still restarts, your issue likely isn't CEC-related - return to software troubleshooting.
If the isolation test confirmed an HDMI device is responsible:
Reconnect devices one at a time
Wait 30 minutes between each device to observe stability
Note which device triggers the restart
Common culprits, ranked by frequency:
Soundbars (especially via HDMI ARC)
Fire TV Stick (aggressive CEC implementation)
Gaming consoles (PS5, Xbox)
Cable/Satellite boxes
Chromecast/Apple TV
Soundbars cause more CEC restart issues than any other device category. If your soundbar is identified as the culprit:
Quick Fixes:
Try a different HDMI port - connect to a non-ARC port and use optical audio instead
Use optical cable for audio - this bypasses HDMI audio entirely while maintaining picture through HDMI
Disable CEC on the soundbar itself - check your soundbar's settings menu
Try a different HDMI cable - use a certified High Speed or Ultra High Speed HDMI cable
Settings Adjustments:
On the TV: Settings → General → External Device Manager → Anynet+ (HDMI-CEC) → OFF
If you need CEC for other devices, try: Anynet+ ON but Auto Power OFF and Auto Power ON disabled
For proper audio configuration without CEC issues, our guide on connecting Sonos to Samsung TV covers alternative audio routing methods.
PlayStation 5:
Go to Settings → System → HDMI
Disable Enable HDMI Device Link
Also disable One-Touch Play and Power Off Link
Xbox Series X|S:
Navigate to Settings → General → TV & display options → Device control
Turn off HDMI-CEC
Alternatively, disable individual options like Console turns on other devices
Nintendo Switch:
Go to System Settings → TV Settings
Turn off Match TV Power State
After disabling console CEC, you'll need to use the TV remote separately, but this eliminates the most common source of gaming-related restart issues.
Amazon Fire TV Stick:
Go to Settings → Equipment Control → Manage Equipment
Set Turn TV On/Off to disabled
Or navigate to Settings → Display & Sounds → HDMI CEC Device Control → OFF
Fire TV Stick is particularly problematic with Samsung TVs. If issues persist, some users report better results using a different HDMI port (not HDMI 1). For complete troubleshooting, see how to sync Firestick remote to Samsung TV properly.
Chromecast: Chromecast has limited CEC settings. The most reliable solution is to physically unplug the Chromecast when not in use, or use an HDMI port with weaker CEC passthrough.
Apple TV:
Go to Settings → Remotes and Devices
Turn off Control TVs and Receivers
After identifying and resolving the problematic device, you can often re-enable CEC for other devices:
Leave Anynet+ ON on the TV
Disable CEC on the problem device only
Enable CEC selectively on devices that don't cause issues
Test stability over several days
This lets you keep convenient CEC features (like controlling your TV with your gaming console remote) while eliminating the unstable device from the CEC chain.
If you've isolated the issue to HDMI but can't determine which device:
Replace HDMI cables - damaged cables can cause handshake failures that mimic CEC problems
Try different HDMI ports - some ports have better CEC implementation than others
Use an HDMI switch with CEC-less mode - devices like the Lindy CEC-less dongle block CEC while maintaining video/audio passthrough
Consider keeping Anynet+ permanently disabled - you lose some convenience but gain stability
If you've worked through all software solutions and your Samsung TV keeps restarting, it's time to consider hardware issues. This section helps you determine whether your TV needs professional repair or replacement.
Hardware failure is likely if:
Software fixes (Sections 4-6) made no difference
Your TV worked fine for years, then suddenly developed restart issues
Restarts happen every few seconds with a clicking sound
The problem correlates with the TV warming up
You notice a burning smell from the TV (stop using immediately)
The restart pattern has progressively worsened over weeks or months
The power supply board converts wall power into the voltages your TV components need. When it fails, common symptoms include:
Clicking sound when attempting to power on - this is the relay trying and failing to establish power
TV powers on briefly, displays picture momentarily, then shuts off
Immediate restart loop (every 2-5 seconds)
Red standby light blinks in a pattern (the pattern may indicate the specific failure)
TV won't turn on at all - standby light may or may not be present
Power supply issues are often caused by failed capacitors - a known weakness in Samsung TVs manufactured between 2008-2018.
Safety Warning: Before opening your TV, unplug it and wait at least 24 hours. Capacitors can store dangerous electrical charges even when the TV is unplugged.
How to inspect:
Remove the back panel (typically 6-15 screws depending on model)
Locate the power supply board - it's where the power cord connects
Look for cylindrical components called capacitors
Signs of failed capacitors:
Bulging or domed tops - healthy capacitors have flat tops
Electrolyte leakage - brown or crusty residue around the capacitor base
Burn marks on the board near capacitors
Physical damage - cracks, discoloration
According to Witonics repair documentation, capacitor failure in Samsung TVs typically shows visible signs. If you see bulging capacitors, the diagnosis is confirmed - you need capacitor replacement or a new power board.
The mainboard (motherboard) controls all TV functions. Mainboard failures show different symptoms than power supply issues:
Visual artifacts (lines, color shifts, distortion) appearing immediately before restarts
Progressive degradation - specific features stop working before restart issues begin
Boot loop that persists even after USB firmware recovery attempt
No response to any input while power light is on
Mainboard failures are more complex than power supply issues and typically require professional diagnosis or board replacement.
The T-Con (Timing Controller) board controls LCD panel timing. Symptoms of T-Con failure:
Half screen displays normally while the other half is distorted or black
Flickering immediately before restart
Horizontal or vertical lines that worsen over time
Image freezing that precedes shutdown
T-Con issues often present as Samsung TV backlight problems before progressing to restart behavior.
Overheating triggers protective shutdowns that manifest as restarts:
Signs of overheating:
Restarts occur after 10-30 minutes of use
Back of TV (near HDMI ports) is very hot to touch
Problem improves when room temperature is lower
Problem worsens in summer or in warm rooms
Visible dust in ventilation slots
Quick test: Point a household fan at the back of your TV while watching. If this significantly delays or prevents restarts, overheating is confirmed.
Fixes:
Ensure minimum 4 inches of clearance on all sides
Remove TV from enclosed entertainment centers
Clean dust from ventilation slots with compressed air (TV unplugged)
Avoid placing TV above heat sources
Samsung Frame TVs connect to the One Connect box via ribbon cable. These cables are prone to loosening or damage:
Boot loop specific to Frame TV models
Problem may temporarily resolve after reseating cables
Click sound from One Connect box before restart
The fix: Check and reseat the ribbon cable connection between the display and One Connect box. Samsung Community forums document this as the cause of many Frame TV boot loops. If the cable is damaged, replacement cables are available from Samsung Parts.
Stop and contact a professional if:
You smell burning from the TV
There's visible scorching or burn marks
You have no experience with electronics repair
Your TV is still under warranty (DIY repair voids warranty)
You're uncomfortable with electrical safety procedures
The problem involves the main board rather than power supply
Different Samsung TV model lines have different vulnerabilities. This section provides targeted troubleshooting for specific model families.
QLED TVs are generally more susceptible to software-related restart issues due to their advanced smart features.
Known Issues:
One Connect box cable issues on models with external One Connect
Game Mode Auto conflicts causing restart during input switching
More complex software stack increases chance of firmware-related issues
Model-Specific Fixes:
Update firmware immediately - QLED models receive frequent updates that address stability
Disable Auto Game Mode if using non-gaming inputs:
Settings → General → External Device Manager → Game Mode Settings → Auto Game Mode OFF
Check One Connect connections (if applicable):
Inspect the cable between One Connect box and display
Try a different One Connect port if available
Consider disabling Ambient Mode temporarily if restarts occur during low-activity states
If you're experiencing Samsung TV game mode issues alongside restarts, addressing the Game Mode settings often resolves both.
Frame TVs have unique issues related to their specialized design and Art Mode functionality.
Known Issues:
Ribbon cable between display and One Connect box loosening over time
Art Mode conflicts triggering unexpected restarts
Motion sensor issues causing unwanted power cycles
One Connect box failures - documented replacement pattern
Model-Specific Fixes:
Check ribbon cable seating - this is the #1 cause of Frame TV boot loops per iFixit repair data
Disable Art Mode temporarily for testing:
Press the Art Mode button to exit
Settings → General → Art Mode → Turn off Art Mode features
Disable Motion Sensor:
Settings → General → System Manager → Motion Sensor → OFF
One Connect box testing:
If available, try a different One Connect cable
Samsung may replace the One Connect box under warranty for documented issues
Samsung Community reports indicate that Frame TV restart issues often require One Connect box or ribbon cable attention rather than software fixes.
Crystal UHD TVs are Samsung's value line, with simpler hardware that's actually more prone to certain issues.
Known Issues:
Lower-cost components more susceptible to power fluctuations
Smart Hub issues more common on this line
More sensitive to unstable power sources
Model-Specific Fixes:
Use a quality surge protector - Crystal UHD TVs benefit more than premium models
Smart Hub reset resolves issues more frequently on this line:
Settings → Support → Device Care → Self Diagnosis → Reset Smart Hub
Firmware updates are critical - value-line models sometimes receive fixes later
Consider power source quality - these TVs are more sensitive to electrical issues
Neo QLED's Mini LED backlighting introduces additional considerations.
Known Issues:
Advanced processing increases heat generation
Local Dimming features can cause software instability
More complex firmware with more potential for bugs
Model-Specific Fixes:
Ensure exceptional ventilation - Mini LED generates more heat than standard LED
Disable Local Dimming temporarily for testing:
Settings → Picture → Expert Settings → Local Dimming → OFF
Keep firmware current - Neo QLED receives frequent updates
Check for feature-specific conflicts:
Try disabling Advanced HDR features one at a time
Test with different picture modes
Older models face different challenges than current models.
Known Issues:
Capacitor failure epidemic - particularly 2008-2018 models
Outdated firmware - some models no longer receive updates
End-of-life software support - Smart Hub may become unstable
Model-Specific Fixes:
Visual capacitor inspection recommended (see Section 7)
USB firmware update may be necessary if OTA updates are discontinued
Consider whether repair is economical - compare repair cost to replacement value
Smart Hub issues may be unfixable - some older models develop permanent Smart Hub instability
For picture-related issues accompanying restarts, reviewing your Samsung TV picture settings can help identify if processing features are contributing to instability.
This section is for technically capable users comfortable with electronics repair. If you lack experience with soldering or electronic component handling, skip to Professional Repair vs Replacement (Section 10).
Before attempting any hardware repair:
Tools:
Phillips head screwdriver set (multiple sizes)
Soldering iron (40W recommended for capacitor work)
Solder sucker or desoldering pump
Solder wire (lead-free, 60/40 recommended)
Solder wick (for cleaning pads)
Anti-static wrist strap
Multimeter (optional but helpful for diagnosis)
Supplies:
Replacement capacitors (matching voltage and capacitance exactly)
99% isopropyl alcohol (for cleaning)
Soft brush for dust removal
Electrical Safety:
Unplug the TV and wait minimum 24 hours before opening - capacitors can store lethal charges
Work on a non-conductive surface (wood table, rubber mat)
Wear an anti-static wrist strap connected to ground
Never work on a plugged-in TV under any circumstances
If uncomfortable at any point, stop and seek professional help
Warranty Implications: Opening your TV voids the warranty. Only proceed if your TV is out of warranty or you've decided not to pursue warranty service.
Lay TV face-down on a soft surface (blanket or towel to protect the screen)
Locate all screws on the back panel - typically 8-18 depending on model
Note different screw lengths - take a photo or organize by position
Remove all screws and set aside
Carefully lift the back panel - there are usually no clips, just screws
If the panel resists, check for hidden screws around ports or in stand mount areas
Once open, systematically inspect:
Power Supply Board:
Check all cylindrical capacitors for bulging tops, leakage, or damage
Look for burn marks or discoloration on the board
Inspect solder joints for cracks or cold joints
Check for any components that look damaged or burnt
Mainboard:
Look for similar signs: bulging, burns, damage
Inspect ribbon cable connections - ensure they're fully seated
Check for any obviously damaged components
Connections:
Verify all internal cables are firmly connected
Check ribbon cables for damage or poor seating
Inspect the power cord connection point
If you've identified bulging or leaking capacitors:
Note the specifications on each bad capacitor:
Voltage rating (e.g., 25V, 35V)
Capacitance value (e.g., 1000µF)
Note the negative stripe marking polarity
Source replacement capacitors:
Match voltage rating exactly (or go slightly higher - never lower)
Match capacitance value exactly
Capacitor repair kits for Samsung TVs are available from Witonics ($20-40)
Amazon carries Samsung TV capacitor kits as well
Desoldering the old capacitor:
Heat each lead while applying solder sucker
Remove residual solder with wick
Gently remove the capacitor once leads are free
Installing the new capacitor:
Insert new capacitor matching polarity exactly (negative stripe aligns with marking on board)
Solder each lead cleanly
Trim excess lead length
Clean the area with isopropyl alcohol
If multiple capacitors have failed or the board shows significant damage, full board replacement is often easier than component-level repair:
Find the correct replacement board:
Note your TV's complete model number
Find the power board part number (printed on the board)
Sources: ShopJimmy, TVPartsToday, Amazon, eBay ($80-200 typically)
Replacement process:
Document all cable connections with photos before disconnecting
Remove screws holding the power board
Disconnect all cables (noting their positions)
Install new board and reconnect cables in reverse order
Secure with screws
Board replacement is "plug and play" - no soldering required, making it accessible for users uncomfortable with soldering but competent with basic electronics handling.
Before closing the TV:
Carefully reconnect the power cord
With back panel off (carefully positioned), turn on the TV
Observe whether it powers on and stays on
Check for any smoke, burning smell, or unusual sounds - if present, immediately unplug
If working, power off and complete reassembly
Stop and seek professional help if:
Mainboard (not power board) issues are suspected
You lack soldering experience
Multiple boards show damage
There's evidence of electrical fire or major component failure
The repair seems beyond your comfort level
Understanding your TV's USB ports and connections can be helpful when reconnecting components after a repair.
At some point, you need to decide whether fixing your Samsung TV makes financial sense or whether replacement is the better option. This section provides real-world cost data and a decision framework.
Issue Type | DIY Cost | Professional Repair Cost |
|---|---|---|
Capacitor repair (DIY) | $20-40 | N/A |
Capacitor repair (professional) | N/A | $100-150 |
Power supply board replacement | $80-150 (parts) | $150-300 (parts + labor) |
Mainboard replacement | $100-250 (parts) | $200-400 (parts + labor) |
T-Con board replacement | $60-120 (parts) | $100-250 (parts + labor) |
One Connect box replacement | $150-300 (parts) | $200-400 (parts + labor) |
Ribbon cable replacement | $30-80 (parts) | $100-200 (parts + labor) |
Professional repair labor typically runs $75-150 per hour, with most TV repairs taking 1-2 hours.
Under 2 Years Old: Your TV should still be under Samsung's standard 1-year warranty (or extended warranty if purchased). Contact Samsung support first - warranty repair or replacement costs nothing. Pursuing DIY repair or paid repair before exhausting warranty options wastes potential free service.
2-4 Years Old: Repair is usually worthwhile if repair cost is less than 50% of the TV's current value. A $150 power board repair on a TV that would cost $600-800 to replace makes financial sense.
5-7 Years Old: Evaluate repair cost versus upgrade benefits. Would you be getting features you want (better picture, newer smart platform, improved gaming features) by upgrading? If the repair is cheap ($100-150) and you're happy with the TV otherwise, repair is reasonable.
7+ Years Old: Generally recommend replacement unless repair is very inexpensive (under $100). Component degradation increases failure likelihood, and older TVs lack features available in current models at reasonable prices.
Standard Warranty:
1 year parts and labor from date of purchase
Covers manufacturing defects
Does NOT cover accidental damage, power surge damage, or normal wear
Extended Warranty:
Samsung Care+ or retailer warranties may extend coverage 2-5 years
Review your specific warranty terms for coverage details
Warranty Claim Process:
Locate your proof of purchase (receipt or credit card statement)
Find your TV's serial number (on the back of the TV)
Contact Samsung Support: 1-800-726-7864 (US)
Describe symptoms clearly - mention troubleshooting you've already tried
Samsung will authorize service center repair or in-home service
Tip: Be persistent but polite. If your TV has a known issue (like the Frame TV ribbon cable problem), mention this specifically. Samsung sometimes extends courtesy repairs for documented widespread issues.
Samsung Authorized Service Centers:
Find at samsung.com/support
Use Samsung-certified parts
Repair work typically includes 90-day warranty
Independent TV Repair Shops:
Often less expensive than Samsung-authorized centers
Quality varies - check reviews and ask about warranty on work
May use third-party parts (acceptable quality, lower cost)
In-Home vs Shop Repair:
In-home service typically adds $50-100 to the repair cost
Shop repair requires transporting the TV (risk of damage, inconvenience)
For large TVs (65"+), in-home often makes sense
Replace rather than repair when:
Repair cost exceeds 50% of equivalent new TV price
Multiple components are failing (suggests overall degradation)
TV is 7+ years old
You want upgraded features (better display, newer smart platform, improved gaming)
The TV has had multiple repairs already
Consider that a 55" 4K Samsung TV starts around $300-400 in 2026. If your repair estimate is $200+, replacement may offer better value.
Samsung Trade-In Program: Samsung occasionally offers trade-in credit toward new TV purchases. Check samsung.com for current offers.
Best Buy Recycling: Best Buy accepts TVs for recycling regardless of where purchased. Some locations offer store credit for working TVs.
Local E-Waste: Search for "electronics recycling [your city]" to find proper disposal options. TVs contain materials that shouldn't go to landfills.
For general questions about Samsung TV manufacturing and service networks, see our article on who makes Samsung TVs.
Once you've fixed your Samsung TV's restart issue, prevent recurrence with these maintenance practices.
Adequate airflow is essential for TV longevity:
Minimum 4 inches clearance on all sides of the TV
Never place in enclosed cabinets without ventilation - if you must, add USB-powered ventilation fans
Avoid placement above heat sources - no TVs above fireplaces (despite how common this is), radiators, or heat vents
Don't place items on top of the TV - they block top venting
Wall mounts need space - ensure gap between TV back and wall for airflow
Power issues cause or contribute to many restart problems:
Use a quality surge protector - not just a power strip, an actual surge protector with joule rating of 1000+
Replace surge protectors every 3-5 years - surge protection degrades with each surge absorbed
Consider a UPS (Uninterruptible Power Supply) if you experience frequent power fluctuations
Avoid daisy-chaining - plug TV's surge protector directly into wall outlet
Don't use extension cords - they can introduce voltage drop
Using a wired Samsung TV ethernet connection instead of WiFi can also improve overall stability and reduce network-related restart triggers.
Keep software current to prevent firmware-related issues:
Enable automatic updates: Settings → Support → Software Update → Auto Update ON
Or check monthly: Settings → Support → Software Update → Update Now
Don't interrupt updates - leave TV on and connected during the update process
USB update for offline TVs - if your TV isn't connected to internet, update via USB periodically
Since HDMI-CEC causes many restart issues:
Only enable Anynet+ if you actively use it - if you don't need one-remote control, keep it disabled
When enabling, test each device individually - add devices one at a time
Disable CEC on problematic devices rather than on the TV - this lets other devices benefit from CEC
Use quality HDMI cables - poor cables cause handshake failures that trigger CEC issues
Weekly:
Restart/cold boot your TV to clear memory (hold power button 5-10 seconds)
Monthly:
Check for firmware updates manually
Clear cache on frequently-used streaming apps
Verify power cord connection is secure
Quarterly:
Dust ventilation slots using compressed air (TV unplugged and cooled)
Check all HDMI and cable connections
Annually:
Inspect cables for wear or damage
Review surge protector effectiveness (check indicator light if present)
Evaluate overall TV performance - degradation may indicate developing issues
Address these early warning signs before they become complete failures:
Increasingly slow startup - TV taking longer to reach home screen
Intermittent audio issues - sound cutting out briefly
Occasional screen flicker - momentary visual instability
Apps taking longer to load - indicates system strain
Random sleep timer activation - may indicate software corruption
Single restarts that resolve after power cycle - early warning of developing issue
If your Samsung TV runs slowly, addressing it early can prevent progression to restart issues.
Proactive app management prevents Smart Hub corruption:
Periodically clear app cache for streaming apps (monthly)
Remove unused apps - fewer apps mean fewer potential conflicts
Avoid untrusted apps - stick to well-known publishers
Reset Smart Hub if you notice performance degradation - before it causes restart issues
If your TV shows insufficient storage space, clearing apps and cache can resolve both storage and stability issues.
A Samsung TV restarting every few seconds (2-10 second intervals), often accompanied by a clicking sound, typically indicates power supply board failure. This rapid cycling pattern means the TV cannot maintain stable power delivery, usually due to failed capacitors. Software fixes rarely resolve this symptom - the power supply board likely needs component-level repair or replacement. Professional diagnosis is recommended, with typical repair costs between $100-300.
Yes, power surges can damage capacitors and other components on the power supply board, leading to restart loops. This damage may appear immediately after a surge event or develop gradually over subsequent weeks. If your restart issues began after a storm or power outage, power board damage is likely. Using a quality surge protector ($30-50 for adequate protection) prevents this damage. If surge damage has already occurred, power board inspection and likely repair is needed.
Factory reset resolves boot loops caused by software corruption or problematic apps in approximately 40-50% of cases. However, if the boot loop results from hardware failure (capacitors, mainboard issues), factory reset will not help. The reset only addresses software - it cannot repair physical component damage. Try factory reset first as it's free and easy, but if unsuccessful, proceed to hardware diagnosis.
Signs of a failing Samsung TV power board include:
Clicking sound when attempting to power on
TV powers on briefly then shuts off immediately
Restart cycle every 2-5 seconds
Blinking standby light in a pattern
TV won't turn on but standby light is present
Visible bulging or leaking capacitors when the back panel is removed
If you observe bulging capacitors, that's definitive confirmation of power board problems.
Samsung's standard warranty covers manufacturing defects for 1 year from purchase date. If your TV's restart issue is caused by component failure (not power surge, physical damage, or normal wear), Samsung should repair or replace it within the warranty period. Extended warranties through Samsung Care+ or retailers may provide longer coverage - check your specific warranty terms. Keep proof of purchase and contact Samsung support at 1-800-726-7864.
For software-related restart issues (firmware, HDMI-CEC, Smart Hub) - absolutely. This guide provides complete DIY instructions requiring no tools or technical skill. For hardware repairs (capacitor replacement, board replacement), you'll need soldering skills, proper tools, and comfort with electrical safety. If you lack electronics repair experience, professional service is recommended for hardware issues. DIY hardware repair saves money but voids warranty and carries risk if done incorrectly.
App-specific restarts indicate corrupted app data or memory management issues, not hardware problems. Fix by clearing the specific app's cache (Settings → Support → Device Care → Manage Storage → select app → Clear Cache). If that doesn't work, uninstall and reinstall the app. This almost never indicates hardware problems - it's a software cache issue that's easily resolved.
Samsung TVs typically provide 7-10 years of reliable service with normal use. Restart issues appearing before 4-5 years may indicate manufacturing defects or premature component failure - particularly the capacitor issues documented in 2008-2018 models. Proper surge protection, adequate ventilation, and regular maintenance significantly extend TV lifespan. If your relatively new TV develops restart issues, it's unusual and worth pursuing warranty service or professional diagnosis.
Samsung has not issued an official recall specifically for reboot or restart issues. However, certain model years (particularly 2008-2018) have documented capacitor problems that Samsung has addressed on a case-by-case basis. If you have a TV from this era with restart issues, contact Samsung support and mention the known capacitor problem - they may offer courtesy repair even outside the standard warranty period.
A soft reset (cold boot) clears the TV's RAM and resets running processes while preserving all your settings, apps, accounts, and preferences. Perform by holding the power button for 10 seconds or unplugging for 60 seconds.
A factory reset erases everything and returns the TV to its original out-of-box state. You'll lose all saved settings, apps, logged-in accounts, parental controls, picture calibrations, and network settings. Only use factory reset when soft reset and other solutions fail.
Yes - Samsung TVs include thermal protection that triggers shutdown when internal temperatures exceed safe limits. If your TV consistently restarts after 15-30 minutes of use, or if the back of the TV is very hot near HDMI ports, overheating is likely the cause. Solutions include improving ventilation (4+ inches clearance all sides), cleaning dust from vents, removing TV from enclosed spaces, and ensuring the TV isn't above heat sources. If restarts stop when a fan is pointed at the TV back, overheating is confirmed.
Volume-triggered restarts almost always indicate HDMI-CEC (Anynet+) conflicts with a connected soundbar. When you press volume, your TV sends a CEC command to the soundbar. If the soundbar sends a malformed response, the TV may interpret it as a power cycle command. Fix by: disabling Anynet+ on the TV, disabling CEC on the soundbar, using optical audio instead of HDMI ARC, or trying a different HDMI cable. Reconfigure your Samsung TV sound settings after making changes.
Your Samsung TV remote is your primary tool for most fixes:
Soft reset: Hold power button 5-10 seconds until TV restarts
Navigate to settings: Home → Settings for software fixes
Factory reset shortcut (some models): Hold EXIT button for 12 seconds
If your remote isn't working, locate the physical power button on the TV (usually bottom edge or back right) for hard reset procedures.
A Samsung TV that keeps rebooting is frustrating, but it's almost never the end of the road for your television. The majority of restart issues - approximately 65-70% - resolve with the software fixes in this guide. Another 15-20% are HDMI-CEC related and fixable by adjusting device configurations. Only about 15% truly require hardware repair or replacement.
Work through this guide systematically:
Start with quick fixes (Section 0)
Identify your symptom pattern (Section 2)
Apply appropriate software solutions (Sections 4-6)
If needed, diagnose hardware (Section 7)
Make informed repair/replace decisions (Section 10)
By following this comprehensive troubleshooting path, you'll either fix your TV yourself - saving the cost of professional repair - or know exactly what's wrong and what your options are. For complete Samsung TV troubleshooting coverage beyond restart issues, our main troubleshooting hub addresses every common Samsung TV problem.
Still having issues after trying everything? Some problems require hands-on professional diagnosis. Use the warranty if available, or consult a Samsung-authorized service center for persistent issues that this guide didn't resolve.
This guide was last updated February 2, 2026, with current pricing, procedures verified against the latest Samsung firmware, and community feedback incorporated from Samsung Community forums, iFixit repair documentation, and JustAnswer expert consultations.