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Samsung LN-T4032H    
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Joined: 12 Apr 2011
Posts: 10

PostPosted: Sat Sep 01, 2012 2:58 pm    Post subject: Samsung LN-T4032H Reply with quote

It works for awhile then the backlights go off but the sound stays on. If it is unplugged it will work for awhile then the backlights will go off agin. The longer it is unplugged the longer it will work. I have replace both inverter boards, but didn't help. When I lose thge picture I have 5.28 volts at the fuse of the t-con, 12 volts to the top plug og the inverter. I also repaced the caps with the red X in the photos on the power board. The first picture of the scope is when the picture is working and the second on is when the picture goes off. Now I am thinking T-Con board, what do you guys think?


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Joined: 28 Dec 2006
Posts: 2879
Location: Overland Park, KS

PostPosted: Sun Sep 02, 2012 6:55 am    Post subject: Reply with quote

c1805 looks swollen to me. your last scope picture looks incredibly noisy, meaning that your caps aren't filtering very well. So I would start with replacing the rest of your caps. After that I would replace the PWM chips that are in front of your transformer.
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