Question about Zenith Z50PX2D 50 in. Plasma HDTV

9 Answers

Zenith plasma tv picture blinks on and off, sound ok

I had two black lines going up and down. I fixed those with new solder. Had green dots and and picture blinking or flashing black with sound still coming through good. I was told to replace the Y-sustain board. I replaced it with a new one and it only fixed the green dots. What is causing the picture to cut in and out?

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  • wolfe77_7 Jan 15, 2009

    Model #P42W46X. How do you test?

  • wolfe77_7 Jan 15, 2009

    The picture cuts in and out on all inputs. Can I just replace one piece? The cost of the main board is alot. How do i test? I have a multimeter.

  • wolfe77_7 Jan 15, 2009

    No magnetic field.

  • wolfe77_7 Jan 15, 2009

    no magnetic things around.

  • wolfe77_7 Jan 15, 2009

    no magnetic fields around

  • wolfe77_7 Jan 15, 2009

    I already paid!

  • wolfe77_7 Jan 19, 2009

    I also replace the main board, but the picture is still cutting in and out. I figured out that it only cuts in and out under a load.

  • wolfe77_7 Jan 19, 2009

    I replaced the Y-sustain board, the main board, and paid a repair guy to come out. he wanted an arm and a leg. he said it looks like it could be the formatting board. what do you think? How do you rate people?

  • wolfe77_7 Jan 19, 2009

    I just got a sulotion saying to replace my main board! I just replaced it!

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Make sure the connection from the service provieder is clear and working. If i were you and were having all of these problems, i would call in a professional to diagnose the problem in person, because this is somewhat difficult for us to diagnose in person.

Posted on Jan 19, 2009

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Let`s see if we can get to the bottom of this.Unlike the other responses you have recived we are going to bypass all the magnetic fields,and other ideas that have nothing to do with how a plasma TV works.This unit is actually a LG Tv.I work on these all day long so let`s see if I can help you.What was the original problem that this unit was having ? When you say the picture is blinking off and on,is the uniit powering off and coming back on or is there actually a picture that blinks off and on?How rapid is the picture bliknking?

Posted on Jan 19, 2009

  • Albert Vasquez
    Albert Vasquez Jan 20, 2009

    On the back of the panel on the left side up top you should see a white sticker as listed VA:60/VS:185.These are your operating voltages for your Y-sus And Z-sus.The connectors @ the top of thr Y-SUS board will have these labled VS and VA.I see you have a voltmeter.On the same connector you will see GND.This is ground.Set your meter to DC and check the voltages.You can stick your meter leads right into the connector where the wires go in.The black goes to GND and the red goes to VS or VA. Turn the TV on and check to see if these voltages are close to what the sticker indicates they should be?Also check to see if they are changing as the picture flickers.Let me know what you find and we can go from there.

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Your main doad went out. You need to replace it.

Posted on Jan 19, 2009

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It could be the tuner board going bad..

Posted on Jan 15, 2009

  • Ronnie Houston Jan 19, 2009

    do yourself a favor.....call a repair man out..people are telling you the same things youve already done and not bringing you a solution and it will save you time and money in the long run

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Hi!
Check also for any cold solders or loose connections or faulty cable.

Posted on Jan 15, 2009

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If you cannot locate "free" on-line info this link is a good source to "buy" what you need

Posted on Jan 15, 2009

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Check wether u have some high sound speakers or some kind of magnetic field close to your tv.it should be atleast 2 feets away and then after taking away such disturbance causing things,u will need to shut off and power on ur tv multiple times everytime keeping your tv on atleast for 2 minutes until those cutouts go completely from screen.
rate the solution accordingly.

Posted on Jan 15, 2009

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Make sure that there is no Magnetic feild around the plasma.

Posted on Jan 15, 2009

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Test cables and lower buffer, more likely the problem is a defective video processor IC on main board, that is not serviceable, and board miust be replaced.

Test also inputs, check that it is not just a bad signal board or a input/cable problem.

Posted on Jan 15, 2009

  • Ginko
    Ginko Jan 20, 2009

    You need to test the VSC board (video scan converter), and the digital board.

    Testing this boards is not easy operation, and you need to follow indications on service manual.

    Service manual can be purchased from Zenith, or from sellers like Vance Baldwin or partstore.

    To give you an idea, here is service manual for a similar model.


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