Question about NEC PlasmaSync 42MP2 42 in. Television

1 Answer

NEc plasmasync 42mp2 - dark screen and in the top few pixels show the image

Before this, on the image ( i was watching a movie ) for few secs the contour of images become pixelate. And than suddenly the image become dark and in the top of the screen i can see like I am watching trough a very dense textile material the image.
Also the OSD is failed to display as the digits are not shown completly and appear line by line like someone draw them with hand.
I am concerned about the fact it is plasma tube faulty or other part of the tv ?

thank you.

Posted by on

  • codec Nov 18, 2007

    Thank you,
    can you tell me where to locate Y-main? I have opened myself the tv. I have plenty of tools an skills in electronics just i did not repair a plasma until now ;)
    the logic board seems to be fain. I check with oscilloscope the output signals. No one is short-circuited or so.
    Do you think I can find a schematic somewhere about this model ?

    thank you once again

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  • 934 Answers

It's either the Y-main or logic board but you would need to do some extensive testing to know for certain which one... It's not the screen..
I would strongly recommend you take it into a shop and have a Tech test it and give you an estimate..
Bill

Posted on Nov 18, 2007

  • William Rayburn
    William Rayburn Nov 18, 2007

    Looking into the back of the unit the Y-Main is located on the left side... At the top right area of that board you should find a group of pico fuses and likely you'll find one of those open as a result if the failure on that board..

    Sorry, don't have a schematic.

    Bill

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