Re: my samsung fat screen 2 yr old just quit the other...
I took the back off and found 4 fuses one was blown on the circuit board where the 115 volt power goes to. my questions to fixya was does the tv have any internal fuses. the answer was no @ no resets either. therefore i feel that i wasted my $14.99 on your service because my main question was answered incorrectly and i would like a refund. you may look back at my conversations to verify this. thank you don boll
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Problem is in either power supply or the Y-Sustain board.
The Y-Sustain is a relatively large board out of which go connections to the side of the display; it's therefore closer to either the left or the right side of the display, has at least one rather large heat sink on it and fat power cables connecting it to the main power supply.
Often there are fuses on that board - one or more. Check those.
if they are blown you can try to replace them, but expect them to blow again - usually the whole board needs to be replaced.
Good luck in solving the problem also be careful in handling the set because it contain high voltage....
All plasma an lcd TV have boards that control vertical and horizontal output to their respective areas. They are connected to the screen by ribbon cables. If one of these boards fails all together, has a failed chip, a bad connection, or a bad ground somewhere it will result in a black line in the area of that board. A bad ribbon cable connection on the bottom will result in a vertical black bar though the screen. Many times resetting the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They an sometimes be fixed, but it is a pain. An yes I have done it, but the bar is gone. The same will happen if the chip that outputs to that area opens. The connectors are the first place to look paying close attention to the cable, they are extremely delicate so great care must be taken if you decide to tinker with em, the usually have lift locks that release them, but it is very easy to wreck em.
This is a fault developing within the screen, the only remedy is to have the screen replaced, there is no exact answer to why this has happened, it is just the nature of a plasma screens make-up that sometimes a fault can develop like this within the characteristics the display
I had the same problem. Luckilly I had an extended warranty. Repair tech said it blew three main boards inside and to fix it out of pocket would have been more than the screen was worth. Hope this helps.