Question about Toshiba 42H81 42" Rear Projection Television

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Sound but no picture, power light flashing

I can only turn off the power by unplugging it. I have sound but no picture at all, no LED messages, just a black screen.

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The lamp could have broken try replacing it

Posted on Sep 18, 2008

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Posted on Jan 02, 2017

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No picture or sound


Hi,

Looks like a power supply issue the only solution to fix this up is to get it repaired.

Goodluck..

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Oct 12, 2008 | Philips 37PF7320A 37 in. HD-Ready LCD...

1 Answer

TV picture wont come on, led light blinking, we have sound


The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

Jun 30, 2008 | Toshiba 36HF73 36" TV

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