TCL TV 5 SERIES GOOGLE TV WON T TURN ON RED LIGHT BLINKING General Troubleshooting
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76%
CONF
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Power Supply Board
The blinking red light is a diagnostic code indicating the Power Supply Board is failing to provide stable voltage to the Main Board or is detecting an internal fault. This board is responsible for converting AC wall power to the DC rails required for the TV components; failure in the capacitors or MOSFETs on this board prevents the startup sequence.
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#CommissionsEarned
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18%
CONF
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Main Logic Board
The Main Board controls the power-on handshake; if the EEPROM is corrupted or the processor has a cold solder joint, it may send a failure signal back to the status LED. Replacing this board is the secondary solution if the PSU is confirmed to be outputting the correct voltages.
SKU: N/A (Model Specific)
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#CommissionsEarned
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6%
CONF
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LED Backlight Strip Kit
In some TCL architectures, a short-circuit or open-circuit in the LED backlight array will cause the Power Supply Board to enter protection mode immediately upon startup to prevent a fire hazard, resulting in the blinking red light symptom.
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DIY Repair Guide
Watch exactly how to replace the Power Supply Board.
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.