irock85
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Jan 26, 2010, 2:56 AM
Post #1 of 4
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Samsung ST-42W5P convergence issue now won't turn on!
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Alright I picked up this TV for free in hopes of repair. The lady I got it from said it had a red line through it.
I got the set home and turned it on. The red convergence was way off, with a curved line at the top left-hand corner of the screen and all the rest of the red curved and off as well. I tried the self convergence through the menu, but it didn't come close to fixing itself.
I read online that this is more than likely one of the STK IC's or the possibly other components on the convergence board that have failed.
SO...continuing my story, I looked this up online and went back out to turn the TV back on. When I hit the power button, the tubes don't fire up. It sounds like the flyback fires up, but the tubes aren't coming on fully. There is a very very faint glow towards the bottom of the insides each of the color tubes where the yolk is connected but nowhere near lit up enough to display a picture now.
Also, the TV used to make a chime when I turned it on, now when it tries to turn on, it doesn't make a chime - only a very slight blip in the speakers. In addition to this oddity, the power LED only lights up sometimes when I hit the power button and the set tries to come on...very strange.
I'm not sure which direction to take, whether it's a power issue or the convergence board causing this.
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The next day in the morning I started experiencing EXACTLY YOUR SYMPTOMS!!!! TV turns on but WITHOUT a PICTURE! I could touch and feel the Heat Sinks on the "new" deflection board getting REALLY HOT (an indication that the convergence IC's are functioning). But NO PICTURE!! I could NOT figure out any reason for that!!! 