Only a probe with a voltage trace can figure to the possible SHORT in the circuit board. You need to look for possible signs of heating which can be an indicator to a short . Also check for the secondary +B to the circuit, check the path that leads to the drive and see if there is high potential drop, if so check the drop to get an idea of the short. The list of probabilities can be more and so ONLY a good voltage check can pinpoint the case. Take consensus but do not replace board at high cost with just assumptions.

Posted on Oct 24, 2011

Anonymous

96 Answers

SOURCE: LG 47LG50 dead....no red light, no blue light, no green light. It made a CLICK sound and went dead. Power Supply?

may be power supply need more information

Posted on Jun 04, 2012

Back2life Electronics

933 Answers

SOURCE: My LG 37LG50 TV wont turn on ?

Are you certain the replacement power supply is good? A defective main board or power supply can cause this problem.

Posted on May 05, 2013

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