Question about Zenith P42W46X 42 in. Plasma EDTV

3 Answers

Zenith 42" plasma p42w46x

My plasma suddenly didint want to work all i see is yellow lines but i can still hear the audio but cant see anything but vertical lines

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  • gmitchell97 Nov 28, 2007

    Have audio, no picture, just colored lines.

  • Anonymous Dec 04, 2007

    Watched a Movie last night with the wife and enjoyey the TV. Turned on the TV today to catch the weather and low and behold... attack of the yellow verticle lines. I have sound but no video. Problem applies to Cable, video etc.. So it is not the input but the TV itself.

    I thought that one of the cables were loose at the conection point, I reset all connections and still get yellow lines.

    Plan on reseting the tube for a few hours but suspect the YSUS board has gone bad.

    This really is a bummer, the TV is not even 3 years old. I remember having TV's last decades, heck my Moms Curtiss Mathis TV still works and it is from the late 60's.

    For the amount of money these pull at the retail level the reliability is not good at all, I would tell anyone looking for a Plasma to get the extended warrenty.

  • rc77 Apr 15, 2008

    i have the zenith 42 in plasma and i have the same yellow lines

  • Anonymous May 26, 2008

    Same thing just happened to mine!

  • contoms Dec 14, 2008

    my zenth p42w46x is D.O.A. nothing but yellow & red lines has good sound, can i buy a board for this problem ?
    mike.. [email protected]



3 Answers

If you know anything about electronics, I have one with the same problem, but haven' looked at it yet. I have two that the screen flickers, found a couple bad electrolytic capacitors on the Y-SUS board. I took a good high voltage capacitor and bridged the aluminum surface mounted capacitors, one by one, and when I bridged the bad one the picture was as good as new, replaced it, no more problem. The TV doesn't have a good design, but they probably designed it so the high heat from the heat sink cooks the capacitors mounted above, just when the warranty has expired. I think I'll mount two cooling fans on the heat sinks to dissapate the heat

Posted on Dec 19, 2007


I have the three zenith plasmas, I've fixed the two that were flickering. The one with the verticle lines, I sawpped the Z-SUS and the Y-SUS from the good TV to the bad and still had the white lines. I looked at the two boards hooked together with 3 aluminum covered ribbon cables that are in the lower center of the TV with all the video inputs, on the far left there is a right angle connector that has about 20 pins, the white cable comes out and goes under to a circuit board this looks like this cable supplies the video signal to the screen. I disconnected the cable and the screen went black, all the voltages going into the video board are normal, so there must be something fried on one of the two boards, there are a LOT of electrolytic caps on those boards. I will post when I figure out whats cooked, you may have the same problem too.

Posted on Dec 26, 2007


I have just had the same problem. It affects both the component inputs but the A/V inputs are OK. If I disconnect the green input, the screen goes black and displays "No signal." Service guy came out and said the Y-board needed replacing. Haven't done this yet

Posted on Sep 05, 2007

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