Question about Philips 42PF7320A 42 in. Plasma HDTV

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No power to my Phillips 42 inch Plasma 42pf7321d/37, just a red blinking light

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Most likely it going to be a power supply related problem. The red blinking light is a code for a TV tech to diagnose the problem on the power supply board itself or the board that regulates the power for the screen. Some manufactures call it a Backlight Inverter Board. A TV repair shop should be able to look at it for you and tell you which board is bad.
Replacement boards can be found at a good price at Shopjimmy.com

Posted on Sep 06, 2009

  • William McNeel
    William McNeel Feb 23, 2011

    Possible cap on your power suppy or either its the panel. I had the same issue and it ended up being a bad panel and the only way to replace those would be to pick up the exact same tv and model and swap boards to make a good tv.

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1 Answer

I have a Phillips 42in plasma 42PF7321D/37 when you turn tv on green light lights up you have sound and picture flickers a few times and then picture is fine and looks great. Noticed menus are hard to see...


I would certainly say the problem is in your power supply. Chances are real good that two capacitors are bad! You will have to remove the back cover...this is tedious and requires patience. You will be concerned with the board on the left side. You will have to remove the screws on the power board to lift it and see the top of this board. You should see at least one bulged capacitor. Replace, and you can bet the other next to it is bad. And another note..there may be a small cap at about 16volts at 10Mf that needs attention. These are clues and should help with repairs! Thanks for asking.

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