Question about Sanyo DP42746 42 in. Plasma Television
You seem very knowledgeable so here's my problem...I am a very mechanically inclined but I don't have experience with TVS. We came home one night and our TV will not power on. It makes a clicking noise and then another one but no visual indication that it is coming on. I did check the fuse and it was getting power. Any other suggestions. I don't have the money right now to pay to have some one fix it, especially if its a cheap part. I have only had the TV 3 months but of course can't find my receipt to return it to the store.
If it just fails to turn on, the main 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 a separate board with mostly larger components on it; it will have a ferrite core transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.
Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.
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.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.
Thje clicking you hear is a relay that repeatedly connects, then disconnects the AC to prevent fire or further damage.
Posted on Oct 01, 2008
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Posted on Jan 02, 2017
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