Question about LG 42LG30 42 in. LCD HDTV
It can be the power supply due to lacking the 12 (16) vdc for the sound and the 24vdc for the backlight inverter board. You need to check the output voltages on the power supply first, it can be from bad DC filter caps (leaking/bulging top, high ESR), main board, etc. Right now the standby 5vdc is working at least.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
Posted on Jul 17, 2010
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Posted on Jan 02, 2017
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