Question about Toshiba 36A43 36" TV

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Blinking red light no picture or sound

My tv does not go on the red light just blinks

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  • 711starfish Oct 11, 2008

    My Toshiba 36a43 36" TV won't turn on with remote or power switch. Unplugged and plugged back in. Clicks on and right back off. When I push the on button the light hesitates but then goes back to blinking. Can you help?

  • brian1669 Feb 17, 2009

    I have the same tv and the same issue, the tv is only about 5 years old

  • tonyquinta Mar 14, 2009

    I have the same problem blinking red light no picture or sound

  • srjjcoon Mar 27, 2009

    same problem, happened mid march 09. tv is about 5ys old and seldom used.

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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.

Posted on May 22, 2009

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