I powered it on and the picture went black then slowley just filss up in spots bright yellow white and blue spots all over screen,
Was this set moved or transported? Is it possible someone struck the screen even if mildly?
If you can take a few good pictures and post them somewhere on the internet and provide the location--seeing what it looks like might tell what is wrong.
A classic description: set comes on but is a black swirling cloud where images can be dimly seen but are not clear--gets a little better after a few minutes but never gets normal.
SOURCE: W4201C no picture only sound
Try to use dvd player to play video to determine where the problems goes wrong either from the video signal of the cable provider or from the TV itself.
Please let me know any update.
SOURCE: Plasma no picture, fades to black from startup logo
UPDATE:
I finally isolated the problem, the problem has to do with the Y SUSTAINER BOARD not receiving enough/necessary voltage when turned on, while initially thinking it was just the yboard was the problem, i replaced the Y sus board with no success, with only further diagnosis, i discovered the board voltages coming from the powersupply, there are 5 voltages that relate to the Y sustainer board, VA, VSC, VS, VE, VSET. they all supply a certain voltages that all have to be supply the correct voltage in order for the y sustainer board to be working, well guess what, the VA line, which for my set needs 70volts, which upon startup quickly drops from 75volts to a jumpy 8.5-9.5 volts, which of course is nowhere near the 70 volts needed, so this quick drop in voltage is directly related to the screen fade upon startup, i found the problem now the real problem is finding a replacement power supply. hope this helps anyone with similar issues.
SOURCE: dell w4201c hdtv plasma tv BLACK SCREEN, LOGO FADES OUT, SOUND REMIANS, HELPPPPPPP
the problem was the y-sus board, i had a local tv repair shop diagnos that much for me. although, he couldn't fix it i did some research and found a company in california, itritek.com, who could. you send him the y-sus board and the two buffer boards and he not only repairs them but he upgrades them. apparently the y-sus board gets too much heat and eventually goes out, sometimes the buffer boards are affected too. itritek.com replaces the components on the y-sus board with better parts which are more heat resistent. i believe this will help you with your problem. let me know...good luck.
SOURCE: I have a Dell W4201C with a 4.5 inch vertical set of 3 lines
you may be able to adjust the y board located on the left side of the unit to bypass the h/v lines. otherwise the panel is defected. i repair the units daily usually, i just replace the panel and powerboard as well as update the revision code and update firmware. I will try to describe the exact location of the adj on the board tommorow
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