imaginenewmedia
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Dec 26, 2017, 4:17 PM
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Seiki SE65UY04 4K LED TV gone black
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Seiki SE65UY04 4K LED TV gone black The problem started when the right third of the screen went dim. This lasted for a few days when the right two thirds went dim and suddenly after that the whole screen went black. Sound and inputs work, flashlight test shows an image, so I'm thinking my LED power supply might be shot. I opened up the unit, and I dont see any burn marks, bulging caps, or anything unusual. There are six conductors coming out of the power supply (inverter) board into a hole in the back panel, (to feed the LED's I suppose) white, black, blue and three red. There was 184 volts dc on the reds (which I thought was high, but I've never serviced tv's before). I didn't see any significant dc voltages on the white, blue or black leads. Everything was measured referenced to the backplate. I don't know where to go from here, other than start checking the components on the inverter board. I don't know what voltages should be expected on the board, or even really how it's supposed to work. Grateful for any ideas. Thanks Andy
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