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My Sanyo HT 30746 keeps turning itself off right after I turn it on.

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  • Sanyo Master
  • 19,396 Answers

Hi.


Your Sanyo went in stand by and does not wake up because an internal fault had been detected, and now the TV is in protect mode.


If after the fault the TV went in standby and does not wake up, then the TV has on protect mode after detecting a fault.
When this happens higher voltages are shut down to prevent further damage.

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 led on (sometimes flashing) in front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

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

1 The 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 a broken contact, identified an internal fault and kicked in , starting the standby fault mode.


If you are in situation one, then the TV 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.

Regards.

Posted on Nov 22, 2009

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