Question about Sharp Aquos LC-37G4U 37 in. HD-Ready LCD Television

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Sharp lcd 22L 50M keeps flashig green and red when swithced on. It does not come on.

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Posted on Jan 02, 2017

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SOURCE: 37"sharp aques lcd red flashing

It is a problem with your power supply board. It is most common on LCD tvs. If you know a little about electronics and soldiering you can fix it. What you need to do is take the back of the tv off and find the power supply board, easiest way is to follow the connector for you power cord up to it. Then i want you to look at the capacitors on the board, the are the cylinder looking things and they should have a metal top to them. Those tops are suppose to be flat, if any of them are raised that means that capacitor is bad. You can read the rating of the capacitor on the side of it and by new ones. I would suggest high temp 105 degrees C ones for tvs. To take them off its as easy as taking the board out, desoldiering the two connections on the bottom, pulling it off, and sticking in the new one and resoldiering it. Make sure when you put the new ones on that you line up the side with with the positive line to the same side that the old one came from, the positive line looks like a greyish stripe down the side of the capacitor. Do this to all that apply, you will need a desoldiering gun that cost like 10 bucks at a radioshack to take the soldier off properly.

Posted on Sep 06, 2011

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