Question about Toshiba 27A50 TV
The picture plays fine for hours then I get a black screen and no sound with a flashing red power light , the TV will eventually power down. Is this a major problem? Is it worth repairing or should I just purchase another TV (don't want to do that)?
I read online that another person had a similar problem and it was some type of cold solder joint. Does this sound like my problem?
just fixed one with that problem it was the vertical output ic Q301
that was shorted. try wicking it out. it is a LA7833S.
Postings say to be sure to use the Toshiba part
Posted on Aug 28, 2008
Same problem with mine. Relays click, sound, no picture and a flashing power LED. I finally found a schematic online. I went through the high voltage circuits and found the power transistor 2SC5570 was shorted out. There is also a pico fuse in that area but my was not open. I replaced the transistor and prayed the flyback transformer was not shorted. It wasn't, I'm watching my old 36" right now. Not a bad fix (17.00) bucks. Wonder what a service tech would have charged ;)
Posted on Jun 14, 2009
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