Question about Panasonic Viera TH-42PX80U Plasma TV

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TH-42PZ80U Panasonic Plasma, red light flashes 10 times

I have a TH-42PZ80U Panasonic Plasma TV, when I turn it on, the red light flashes 10 times then it will stop. Then after a few seconds it will flash 10 times again then it will stop, this will go on and on... don't know what to do.

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  • Anonymous Mar 25, 2014

    Red light is flashing and the tv won't come on Panasonic plasma

  • Anonymous Mar 25, 2014

    I have a Panasonic plasma TV the picture won't come on and the red light flashes 10 times

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Panasonic said "A" board,
A board SOS Detect (Explanation)
10 Blinks SOS: The voltage regulators IC5400 and IC5401 in the A board generate SUB9V and SUB5V. The 9V and 5V from these ICs are monitored by IC1100. Any abnormality on the SUB9V or SUB5V lines, triggers the shutdown circuit and the MPU shuts down the unit. The power LED blinks 10 times.

But need to measure the connection SC2, if it short, it will be the SC board.

The knowledge obtain from: Real case of repair by myself.
Information from Panasonic training manual.

Posted on May 10, 2010

  • benfessler Jan 09, 2011

    @TVhelp-Dave. I'm having the same problem with the same TV. Is the A board the main input/ output board? Where did you get the repair manual that you site in your response? I'm decent with electronics, but it is impossible for me to walk throught these steps without a schematic. Do you know where to find a copy of a manual like this in physical or pdf form? Thanks a lot. Your responses are always thorough and usually right on the money. I appreciate any help I can get.

  • Shukai Fung
    Shukai Fung Jan 11, 2011

    Sorry, Iam notable to post the schematic.

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Most likely the problem is in the power supply and most of the time can be fixed by replacing a few capacitors but, you may want someone professional to do them to make sure you don't make any short circuit.

Posted on Apr 30, 2010

  • Jeramie
    Jeramie May 22, 2012

    not always true.

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Take to a service agent 10 is usally error code for power board

Posted on Apr 27, 2010

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