50inch zenith plasm replaced z and y sustain boards .when turned on sound is great but the whole screen is bright colors and verticals lines throughout the whole sreen

Here is a repair service for the ELEMENT PHD42W39US:
http://www.coppelltvrepair.com/p/560/repair-service-for-element-phd42w39us-ysus-board-causing-dark-screen-or-tv-not-powering-on-problem
Not sure this particular one applies to your case though...usually when sustain boards fail you lose the whole screen or brightness...or, at worst,develop some vertical lines.

Can be a case of vertical collapse. If this is the case, then the vertical oscillator and/or the vertical driver circuit are faulty. .

You can take you problem directly to zenith. They have a customer service post available here

Hello
The y SUSTAIN board to your tV is faulty. It should be repalced.

hi i have a 50" magnavox that has a problem, i was looking at several websites and i find out the dirfferent posibilities.
in your case i have 2 posibble answers.
1) negative image
tv turns on and shots down in 2sec
flashing pixels on screen
dark image
has sound but no video
screen goes black and then return to normal picture
vertical color lines on screen no video
vertical color lines with video
vertical bars on screen
horizontal lines on the image
picture goes red after while
IT COLUD BE (X or Y or Z SUSTAIN BOARDS )

2) just left part of screen working
just right part of the screen is working
vertical and horizontal lines on screen
part of screen not working
some functions not working
no video but has sound
functions not working at all
IT COULD BE (LOGIC CONTROL BOARD)
TErry HerreRA

After all the research I found out that the IC on the Z board is bad and new board was ordered and replaced. The plasma work fine after that and picture is excellent with the new board. This forum is great, without this I couldn't fix it myself. Thank you.

Ur video ic inverter board is dying about to be dead.U need a new video ic inverter board.

Philips 50 inch plasma tv no video but has sound

Hi Shailendrar , your problem sounds like vertical collapse , the whole picture has collapsed into a thin , very bright centre line ? maybe the result of dry solder joints , does banging on the side of the tv temporarily fix ? if so , the circuit board requires inspection for bad solder joints . Alternately the vertical chip/transistor may be blown , replace as required. Cheers T

well I recently took my tv to a tv repair shop and they told me i had to replace the Y board and a Driver board. All in all it set me back $550.00

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