Question about Hitachi P50H401 50 in. Plasma HDTV
Just for the record, there aren't any CCFL tubes or fluorescent tubes in a plasma set!!!
Here is where your at one of your power supplies are shutting down for some reason, plasma sets are a lot harder to work on than a LED or LCD TV as there are power supplies on almost all the boards. I'm guessing your issue is with the Y-buffer board as this board has a high failure rate, not sure how competent you are around electronics but if your comfortable removing the back try unplugging the cable going from the power supply to the buffer board and power the set back up...you should have a distorted picture with that board out but you can see a picture most the time, run it that way for a couple hrs and see if it shuts off, if it stays on and I think it will replace buffer board and it should be good as new
Posted on Feb 03, 2018
Your fluorescent tube or the board driving it is bad. Have the tube checked out before you spend a lot of money on a circuit board, this is not something you should do yourself especially if you are not a TV service technician.
Posted on Feb 03, 2018
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Posted on Jan 02, 2017
MY TV KEPT GETTING WORSE EACH DAY ALSO. BUY A CAN OF SPRAY AIR WITH THE EXTENSION SPRAY TUBE. WHEN YOU GET THE TV RUNNING SPRAY THROUGH THE HOLES IN THE BACK RIGHT ONTO THE FAN BLADES OF BOTH FANS. THE DUST WILL FLY OFF THE BLADES. A VACUMM HOSE WILL HELP PULL OUT THE DUST. ALSO SRAY THE POWER SUPPLY BOARD FOR DUST. I APPEARS THE FANS SLOW DOWN WITH DIRT ON THEM AND THE EXTRA HEAT BUILD UP JUST AFTER THE TV IS SHUT DOWN IS CAUSING THE POWER SUPPLY TO BE IN A SHUT DOWN MODE WHEN POWERED UP THE NEXT TIME. BEEN TWO WEEKS NOW AND WORKS PERFECTLY NOW AGAIN.
Posted on Feb 11, 2010
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