Hi, I am new to the forum and saw another thread similar to this one Well I recently made it back from vacation and I went to turn on my tv and it is very dark. You can see very little on it. The sound works perfectly good. I read that these Sanyo plasma tv's have problems with their y sustain boards. So my question is what do you guys think is wrong with it and what do I need to buy to fix it?
SOURCE: no picture but sound plasma tv
If it is affecting video only, the display's power supply
is probably at fault and without some
technical background and a couple of test instruments, you will not be able to
do the repair yourself.
What you can do though is; unplug the set, let it
stand overnight or at least several hours, remove the back panel and look for
two separate boards with mostly larger components on them; they will have
ferrite core transformers on them and several larger capacitors which are
cylindrical and mounted vertically to the board.
Before touching anything inside, especially on either
board, allow several hours to be safe since the larger capacitors can hold a
painful voltage charge for some hours.
The
section most likely to fail and cause your problem will be one that you see
associated more with the display than the incoming AC line; the latter is the
main power supply and its failure would result in no sound or video.
If you see signs of overheating such as discoloration of
the board material, it may not be repairable but if you can find a part number
on the board, you might be able to buy the power supply and install it
yourself.
If there are no signs of heat damage to the board, there
may be companies offering to repair it as a subassembly instead of repairing
the whole set which could be much more expensive.
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