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My Panasonic TH-42PZ77U will not turn on.

My TH-42PZ77U (Panasonic 42" Plasma tv) will not turn on. I get 7 blinks on the power button. The fans start up but then shut right back down.

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  • patsoxfan Jan 21, 2009

    Thank you very much! Panasonic is not much help!

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It sounds like you have a bad main board

Posted on Jan 11, 2009

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That is true 7 blinks on service manual is progressive scan board, often the 7 blink are caused also by a faulty power adapter, that does not supply right voltage to the board.

In either case you need a technician, replacing the part witout testing it may be only a waste of money.

Regards

Posted on Jan 11, 2009

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The 3rd board (the largest) called an SC board has failed. Has to do with voltage regulation.

Call your serviceman, and he'll have you going in 15-20 minutes.

Posted on Jan 11, 2009

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Its the problem in the circuit board that has to be checked by a meter and the faulty components has to be replaced to make it proper.

thanks.

Posted on Jan 11, 2009

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The 7 blinks means that the SC scan drive board might need to be replace but only after checking the voltages from the power supply. If the voltages from the power supply are normal, then proceed to replace the SC scan board.
Click here to find the board you need

Posted on Jan 11, 2009

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I have a panasonic TH-42pz77u plazma. When I turn it on it turns its self off just as the picture starts to come on and audio starts. The light by the on and off switch then flashes 7 times continually. ...


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Well don't tamper with it just return it, there is serveral problem that may cause this, most likely it is the power supply board.


Regards
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Home of Shania Twain

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