Question about Toshiba 42H81 42" Rear Projection Television

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No picture no sound

Red power light comes on but no picture or sound. All cables etc. appear fine.

Posted by aquar4321 on

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TEXAS TV PARTS

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Hi,
go to ebay and search for TEXAS TV PARTS or texasgreatdeals4you.
then Ask this guy to fix your board,he will tell you which board to send to them.
alright.

Posted on Jul 07, 2012

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No picture no sound, red light on, left unplugged over-nite, no change. Turn on/off a number of times, got back perfect picture/sound. Turn off, same problem, no picture/sound, red light on. Tried...


First if the model number is right here: When the red light is on about 80% of the set inside is powered up and running all out.

On these sets if you turn it off and the red light does not go out one of the relays on the power board is engaged or stuck in the closed position.

If I remember this model it has three black rectangular plastic relays on the power supply board(follow power cord into the set to see if this is the case.)

Relays have voltage and type marked on top (like 12 vdc etc).

Carefully with back removed what I would do is with something NOT metal tap on each relay until (with set turned off) the red light goes out.

That is the bad relay----if set has 3 I usually replace all as only 4 solder connections each and they are not real expensive.

I saw one of these sets where the customer had been gone for a month and when she returned set appeared to be off but Red light for power was on.

The set was so hot I tapped on the relays and then when I knew which was bad shut the set off and unplugged it to let it cool off.

I am saying if you leave the set plugged in and the red light is on There is the chance it may overheat to the point where you could have a fire.

Let me know if you have questions.

SD TECH

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Thanks

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[email protected]

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