Must be a bad month for my tv's.. my 42" samsung is losing it's picture. It goes dark but not completely off. Almost like the brightness is all the way down. Any ideas???? it is a 4215wx model.. Thanks,ed
Re: [capted] dark picture on samsung
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Hey guys heres an update. I went to check powers and loose solder the other day. Nothing found. cleaned out the dust and checked the connections. I did do a convergence chip repair on this unti so I figured I left a connector loose or something like that. Put it together and it worked normal. Well naturally I went to watch it the other night and it went dead. No pic or sound. The timer light stays on solid. Any ideas before I take the unit apart again to check??? I'm thinking the power supply was starting to fail causing the picture to drop out...
Re: [capted] dark picture on samsung
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It's been awhile since I played with this t.v. so I figured I'd post my results. Maybe it will help somebody. I purchased a new main board for the unit (only $120) hoping it would be a lucky guess. I put the new one in and noticed smoke right away!!!! Swaped out with the old one and no picture still. The picture went completely dead before I purchesed the new board by the way. Now I thought about the original problem for some time. I did unplug each color signal from the component connections to see which color was dropping out when the original problem was happening.. It ended-up that the blue crt shutting down... So now I pulled the connector off the blue crt board and put the new main board back in the t.v. It worked!!!! I had a picture back on the t.v. minus the blue.. Now here comes the stupid part... I plugged the crt board back on and disconnected the actual crt from the board.. Turned the t.v. back on and the magical smoke came back. Only problem now is I think I fried the main board again because even with the blue crt board disconnected the t.v. will not power back on..
Not a Happy ending but I figured I would keep everyone posted.. Now I also found some burnt chips on the blue crt board. Now I am wondering if the crt was going bad or just that crt board???
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!!!! Swaped out with the old one and no picture still. The picture went completely dead before I purchesed the new board by the way. 
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