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Tv fault my tv is turning itself on and off

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Is somone standing behind you with the remote ?

Posted on Jan 21, 2009

  • lineation Jan 21, 2009

    seriously its worth checking if remotes close to you are causing problems

    you posted so long ago ya probably sorted it anyway

    if you have any remote control extenders it would be a good idea to switch em off

    If you have more than one remote that can control the system check down the side of the sofa

    or ....

    ya partners hand / is someone sitting on it

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Jun 18, 2011 | Flat Panel Televisions

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Power went off and then tv will not start. It is fitted with a surge protector


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.

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.

Sep 10, 2009 | LG 42LC2D 42 in. LCD HDTV

1 Answer

Keeps turning itself off. Reckon its an overheating issue.


LCD TV turning itself off is not necessarily overheating.
Often, because of a faulty component, capacitors can accumulate electrostatic charge until an error is detected, or a fault condition can last for a while, until a problem is detected, and the protection circuit will force the TV to shutdown.
The only temp sensor that can shut down because of overheating is placed on the main board, and TV shutdown after a while is often not caused by overheating on LCDs.
Parts that often cause shutdown after a time are Power Supply Unit, Inverter, and main controller board. Parts must be tested to find the fault. The technician can follow the diagrams detailed on service manual to find the fault.
Regards.

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1 Answer

Tv Turn sound on, No Picture, turns itself off within seconds


The TV is trying to go on protect mode because an internal fault had been detected. For that reson the protection circuit keeps turning off TV continuously.

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

May 23, 2009 | Sony KLV-30HR3 30 in. LCD Television

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