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Plasma sets have two separate power supplies; the main supply produces voltage for everything and may even produce a specific voltage for the high voltage required by the plasma display.
In your case, it is likely that the latter (HV) supply has failed.
This may be a separate board and if so, may be user replaceable since these are normally outsourced and just plugged into the set during assembly.
Removing the back of the housing, you are likely to see at least three boards.
One of them (the main board) will have many components and most will be smaller in size.
The main power supply will have much larger parts on it and the high voltage supply will likely be connected to it and have far fewer parts than the other boards.
It is possible but unlikely, that the main power supply is not providing voltage to the HV board for the display.
If replacement of the HV board doesn't restore the display, then it will be necessary to replace the main power supply too.
Your power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
Tries tv unplug,replug tv back about an hour later.By letting tv resetting itself back to the factory setting.Now the tv should be working again.If still have the same problems.The power supply board is the causes and the problems.That the board,where the power a/c cord plug into it.Try website like Ebay.com to guy a whole refurbish power supply board for the replacement.
Yes,it is the power supply board problems.The power supply board,that board where the power a/c cord plug into it.U have all the tools,know basic eletronic and basic soldering?Yes,check the power supply board for those dying parts call capacitors.These capacitors that are dying,it alway will bulges up or puffing up on it tops.By checking the power supply boad and replaced all these dying capacitors,will solved ur tv powering up problems.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
Check ur power source with other devices?Yes.Than,the power supply board it dead.That the board,where the power a/c cord plug into it.Try website like Ebay.com to buy a refurbish power supply board for the replacement.
Commonly it's going to be a power supply related problem. The two boards that need to be looked at is the Main Power Supply Board or the power supply board for the screen. The one that powers the screen, some manufactures call it a Backlight Inverter Board.
If you have some electronic experience, you can sometimes find a Service Manual for the TV over the internet for less than $20. It will have the all resource material for repairing your TV model. It's just the matter of replacing the bad part on the circuit board.
Most Likely the power supply board has a few capacitors blown.You can repair it by removing back cover power supply board will be at the center of tv.Look for caps that have a round top these are the bad ones replace with same value caps.You will have to take power supply board out.Be careful these power supply boards have alot of voltage store in them.