Question about Toshiba 50H81 50" Rear Projection Television

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No picture- red light is on steady(not flashing like other posts)

My 50H81 Toshiba is 7 years old and has never given me any problems till now. It is used on average 6-8 hours a day. I used it for about 2 hours and shut it off for about 10 minutes. When I turned it back on the screen was black. The power light was on steady(no blinking) and it made the normal start up sound. I tried unplugging it and that didn't work. I shut it off for 1.5 - 2 hours and tried it again and it started up fine. Should I start shopping for a replacement or is this economically fixable?

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  • dreykdal2 Feb 13, 2009

    Thank you freetek. I'll give that a try.

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Your good description of events is helpful and points to the power supply as the culprit. This is probably on a separate board (they are often out-sourced) and may be easy to replace. You should be able to identify the board since it will be smaller than the main board and have larger components on it including one or more transformers and larger capacitors (plastic shrink-wrapped cans of different sizes). 
If you want some confidence before rushing out to buy one or have this one repaired, you could pick up a can of 'freeze spray' from any electronics supplier (Radio Shack may have it too), pull your set from the wall, loosen the screws on the access panel behind (don't remove it; that may improve cooling and mask the failure), keep the freeze spray handy so if it fails, you can pull the panel and start spraying the PS board. I'd start with the small to medium sized capacitors since these are often at fault once aged.
Good luck-

Posted on Feb 13, 2009

  • Steve Allison
    Steve Allison Feb 13, 2009

    I failed to mention that if the set is still under power, be very cautious where you put your fingers; the power supply may have several hundred volts applied to areas that can be inadvertently touched. 

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