Question about Mitsubishi WT-46809 46" Rear Projection Television

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JOESTV TURN IT ON PLAYS GOOD 30 MINS THEN GETS BRIGHT CANT AJUST IT.TURN IT OFF THEN ON WORKS GOOD THEN GETS BRIGHT AGAIN

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Spay a can of freeze on the vertical ic while it happens if not that ic try others.

i found this on a different page
his set could have a few probems. One common problem on alot of mitsubishi big screens is the surface mount capacitors on the doubler module go bad, but usaully the set stays on but does not have any sound or picture. It is most likely a problem in the vertical. If there is no vertical sweep seen by a certain protection circuit, it will shut down the set to protect the picture tubes from having a line burned into them from just a single intensely bright line being displayed. I have had many a mitsubishi have pico fuses open randomly in the 26 volt line for the vertical and when replaced the set operated normaly. I also had bad solder connection on the vertical output I.C's causing them to short out and open the same pico fuse. There could be oher factors but those are 2 of the most common ones I see. Without actaully looking at the set thats the best I can do. I would say its well worth getting fixed..

Posted on Dec 14, 2007

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