Question about Zenith P42W46X 42 in. Plasma EDTV

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Plasma Screen not working only sound

I have the Zenith P42W46X 42" Flat Panel Plasma ED-Ready TV with NTSC Tuner and i was watching it and the screen went black and only plays the sound.

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  • Anonymous Jan 12, 2008

    i have the same problem i think it mite me cathode tubes (bulbs) that have blown im not an expert but makes sence to why the sound still works

  • Technique2 Feb 04, 2009

    Same model. Here is my setup:

    42" + Comcast HD box + PS3 + Compaq PC
    The PS3 and Cable Box use HDMI cables
    The PC uses an RGB cable
    I have RCA's running to my amplifier/ surround unit.

    Here is my case.

    I was watching the set yesterday and turned it off to leave for the evening. Upon my return I attempted to power on the set (remote) and it responded,(set went from standby (RED) to on (GREEN) but no picture. I have sound, but the screen is BLACK.

  • browndwz Mar 25, 2009

    I have the same problem as the others in this post, a picture in post shows what my set looks like also.

    It just started today when i turned the set on, I didn't notice any "pop" from the set, but it could have. It's a four year old set.

    I pulled the back panels off and noticed a diode "LD500 on board 3141VMF721A blinking red"!!



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It might be one of the power supplies. There are three in this model. One for the sound, one for the video, and one for the computer components. The video power supply is probably shot. They cost about $200 a peice from LG. If there was a "pop" sound when the video stoped, then it might be one of the circuit boards in the back. Yet again, they are three, each costing around $200 from LG.

Posted on Sep 12, 2008


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take visa or mastercard to local best buy for new tv. sorry

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