Question about Zenith P42W46X 42 in. Plasma EDTV

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My Zenith P42W46X 42 inch tv got two black lines vertical lines on the screen the were coming and going away before but they are more stable now.i opened it up and wiggled all the connections arround the panel but it didn't help,what should i do?

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  • Leon Brown
    Leon Brown Mar 28, 2012

    just wanted to say thanks . I solder the chip and all is good

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There are 4 or 5 ribbon cables on the bottom or on one side, they control part of the plasma screen. Check the ribbon cable near the black lines. Unplug the ribbon cable and look for black chips on the underside of it, I think they say 100 on them, you need to resolder both ends on each chip. Should fix the black line issue.

Posted on Nov 16, 2009

Testimonial: "thank you for your respond.you are absolutely right and i have already done that it is fixed now, thank you for caring and your time,,,:)"

  • Leon Brown
    Leon Brown Jan 21, 2012

    Is , the ribbon replaceable ?
    I have same issue , but just 1 line in center. I have narrowed it down to the center ribbon. I can press on the back of the metal plate an the line goes in and out.. I unscrewed the plate and can see the 4 black chips on it. I don't see any soldering on the chips on the ribbon. Can you explain more about soldering the chips , please?

  • John W Jan 22, 2012

    There should be solder on both sides of the chip. There usually is, but it gets a crack. I would just hit each side with some new solder.

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  • Master
  • 1,922 Answers

Sounds like you have some defective electrolytic caps in the vertical coupling circuitry

Posted on Oct 08, 2009

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