That board directly connects to the display panel---you may have a bad display panel which if is the case is fatal---panel alone will cost more than the set did when new----seen this before in the shop where I repair sets.
SOURCE: TV Won't Turn On
I purchased the TV using AMX card 18 month ago. They have an extended 1 year warranty on top of manufactory's. I just have this set repaired: replaced SD board, total charge is $550. I already file a claim and hope to get reimbursed soon.
SOURCE: No Picture
I would check the soldering first for any cracks, and any obvious faulty capacitors or components. It looks like the power board is going into a protective mode because of a short / failed component somewhere.
It would be virtually impossible to guess exactly where with a spot check..
SOURCE: Panasonice TH-50PE8U Red/Purple Line
take a rotary vacumm and make circles on screnn make sure tv on and vacumm, back up slowly making circles that take up the whole tv, repeat this s couple times, it goes away
SOURCE: Westinghouse 32 lcd tv - no picture no sound - set
Reset the tv and the cable or satalite boxes,replug it back an hour later let the tv reset it self back to factory setting and the boxes upgrade it software.The tv should work now.Not,than yes.It the Tuner main board.
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