Question about Panasonic TH-42PX6U Plasma TV

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We cannot control the volume or channels on the tv or the remote. Only the on/off switch works. When we turn it off, the red light flashes 20 times.

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  • Panasonic Master
  • 19,396 Answers

Hi.


the TV goes in standby and does not wake up, because the control board is sending TV on protect mode after detecting a fault.
When this happens higher voltages from psu get shut down to prevent further damage.

20 Blinks is not an error code, but I will do some more research on this.

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.

Posted on Nov 19, 2009

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3* Press and hold down the Select and red buttons simultaneously on the Sky+ remote control until the red light at the top of the Sky+ remote control flashes twice.

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1 Answer

Can u help?


1. TV on.
2. On your Dish Network remote PRESS AND HOLD the small clear tv button until all buttons across the top of the remote light up and release.The only button lit should be the clear tv button that will be flashing.
3. Press the small red tv button next to the power button and release it. This should leave the clear tv button that was flashing lit solid.
4. Now slowly depress the channel up key until the tv turns off.Each time the up channel button is depressed the clear tv button will cease being lit and once it is released the clear tv button should remain solid. If the clear tv button flashes multiple times it usually means there is no known code for your tv, there may be another code that will work so continue on.
5. Once you are successful in getting the TV turned off press the channel down button once and then the channel up button. This should turn the TV back on.
6.Press the # key button on the remote. The clear tv button should flash three times then press the record button and try the volume up/down and the small red tv button. You should be able to turn volume up and down and turn tv on /off. If only one of these function it means that you have only found a half code and need to try the process again. Not all TV's have full codes or any codes at all especially combo units.
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