Question about Sanyo DP42746 42 in. Plasma Television
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Posted on Jan 02, 2017
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.
Posted on Oct 01, 2008
SOURCE: Sanyo Sucks re DP50474 PLASMA
Call back and ask for a supervisor. I had the same problem and they are replacing the boards in my TV but I have to pay the labor. Insist on speaking with a supervisor.
Posted on Jan 13, 2009
SOURCE: My 27" Sanyo DS27800 when
U using the RCA AV cable Y,R,W plug into those tv video input holes wright?Tries another RCA Y,R,W AV cable,see if it work?U have tools like a soldering iron,a roll of solders,also can u do basic soldering?Tries take some alchahol clean the Yellow input hole and take the tv aparts resolders it connections joints,now the video out it should work again,if not yellow input hole might be shorted require replacing.
Posted on Jan 27, 2011
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