Question about LG 42PX3DCV 42 in. Plasma EDTV
I have red, blue and green pixels in all dark areas. tv worked great at store, when i hooked it up at home bad picture. tried dvd player, video games and different connections still same result. this is a plazma tv, it stayed upright the whole time.
Pixel misfiring (diffusion errors) are caused when the tv is not firing and erasing the pixels correctly. It can be caused by a number of things, usually a voltage or waveform is off somewhere. If you just bought the tv, return it and get another. If you are out of warrany, you can remove the back panel and run the tv to check the voltages. Don't touch the heatsinks! they're electrically hot and will zap you.. the voltages are labeled on the back of the plasma panel with a sticker. first check Vs and Va. sometimes you can check -Vy, Vset, Vscan and others if labeled on the board. If you have to adjust waveforms you need a very $$ o-scope and should get qualified technician to adjust. If a board is bad, its likely your power supply or Y-sustain pcb, and less likely your Z-sustain or contol (logic) board.
Posted on Dec 07, 2008
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Posted on Jan 02, 2017
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