This video demonstrates the dreaded Sony Bravia 3 blinking red light problem on a KDL-52XBR4 52" LCD TV. This TV works perfectly fine when it does work but it has become progressively less stable and now refuses to turn on for more than a couple of seconds. The standby light blinks red after it finally fails with 3 red blinks (usually), which only narrows the problem down to a faulty power supply board or a faulty logic board. Sometimes the light blinks 6 or 8 times, which could also point to the inverter board being bad.
In this video I walk you through the symptoms, the diagnostic rationale, tips and tricks to identify where the problem is likely to be, which parts you may need to replace and then I perform the repair and show the results, all step by step and with detailed explanation. This kind of diagnostic and repair can be done on many Sony Bravia LCD models and may apply more broadly to other LCD TVs in general that operate on a similar premise.
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28 янв 2021