Question about HP PL4260N 42 in. Plasma HDTV

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After replacing y-sustain board have nothing but vertical lines on screen

After I repalced the Y-SUS board, turned the TV on and now the screen comes to life as it didnt before, but all i have are vertical multicolered lines running across half the tv on the right side. Any idea what this might be and how to fix it?

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  • natiyati Oct 16, 2008

    hmmm, so if i buy one from shopjimmy, anything else i can expect?

  • natiyati Oct 16, 2008

    not sure what you mean about rating. I was just asking another question and only way i could see to do that was repost. Site is not most intuitive in the world

  • natiyati Oct 16, 2008

    and how do i do that

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Hi,
This might be problem with fluctuations in voltage. So make sure your voltage stabilizer is working properly. If yes it is better to contact the service person to fix it.
Thanks & regards

Posted on Oct 16, 2008

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  • 538 Answers

Well..sounds like the main control board to me..these things tend to fail as a group, by the way...

Posted on Oct 16, 2008

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  • A Womans Computer Man
    A Womans Computer Man Oct 16, 2008

    well..sure not much help when you rate a short answer too quickly..

  • A Womans Computer Man
    A Womans Computer Man Oct 16, 2008

    of course, that may have been a mistake, right?



  • A Womans Computer Man
    A Womans Computer Man Oct 16, 2008

    that part is clear..just change the rating from thanks for trying to helpful or fixya, if you want to continue this




  • A Womans Computer Man
    A Womans Computer Man Oct 16, 2008

    log into your account, and look at your solutions.then pick this one, and then revert the rating..unless it is locked in..

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Tv repair.for plasma tv


No screen boards found. Do you mean any of these?
Types of TV Boards Every TV uses a collection of various boards to perform every function imaginable in a television. The boards work together to produce sound and images on a television screen. When certain mechanisms in a TV fail, it might be time to start testing different boards to see if they are functioning properly.

Main Board

The main board is the central hub of a television circuit system. The easiest way to identify a main board is to find the board with the various video and audio inputs/outputs. Generally speaking, main boards also contain a tuner, HDMI, USB, and S-video port. Main boards are one of the largest boards in a television. Main boards might also be referred to as a motherboard, main module, or an A/V board.

Power Supply Board

Another large and important board inside a television is the power supply board.. Usually found in the center of the TV, the power supply board has several connectors that supply power to the other circuit boards. It can contain transformers, large capacitors, and integrated circuits. There is usually a table on the power supply board indicating the different voltages it produces in addition to the signal names.

Inverter Board

Found on LCD TVs, inverter boards are used to mount the LCD backlight. These are smaller boards, usually shaped like long thin rods. If an LCD TV's screen is dark, distorted, or difficult to see, it can be the result of a defective inverter board. Inverter boards fail when inadequate power is not allowing current to pass through the backlight bulb.

Timing Control Board / Logic Board

The timing control board, known as the T - CON board,, is typically only found on LCD and LED TVs. Plasma TVS, on the other hand, use a logic board.. The functions of the logic and T-CON board are similar, as each functions to digitize the information it receives from the TV's processor. This allows the screen to display images on the pixel level. When the T-CON or logic board fails, the screen images may become distorted, leading to pixelation and the appearance of lines on a television. On a logic board, there are slotted connectors on all four sides, while T-CON boards have connectors on just two sides.

X-Sustain and Y-Sustain Boards

Also known as the X-SUS and the Y-SUS, the x-sustain and y-sustain boards only appear in plasma screen TVs. The x - sustain board might also be called the Z-SUS. These boards function similarly, producing proper screen images. Although they serve pretty much the same function, the two boards work independently of each other. The x-sustain board activates all the display lines at once, while the y - sustain boardaddresses all the individual lines of display. When one board breaks down, it probably will not affect the functionality of the other. However, it might be a good idea to have both replaced because X-SUS and Y-SUS boards have a relatively short life span anyway. A failure of one could mean an impending failure of the other.

Buffer Boards

B uffer boards are also only found in plasma screen TVs. Connected to the y-sustain board, a buffer board works to turn output to the plasma display. Common defects of buffer boards include the burning and shorting of power lines.
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The y SUSTAIN board to your tV is faulty. It should be repalced.
3_1_2012_4_06_39_am.jpg

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Since the lines are vertical, the image is lost sideways and the corruption changes with the image then clearly this is a sign of Y-Sus failure, not the Z-Sus or the buffer boards.
An logic or input board failure would affect the entire screen, not just a part of it and a failure in one of the buffer boards would affect strictly defined lines of pixels and the defect would be constantly there all the time.
Since you haven't told us the exact model i can't point you to a replacement board.

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I finally isolated the problem, the problem has to do with the Y SUSTAINER BOARD not receiving enough/necessary voltage when turned on, while initially thinking it was just the yboard was the problem, i replaced the Y sus board with no success, with only further diagnosis, i discovered the board voltages coming from the powersupply, there are 5 voltages that relate to the Y sustainer board, VA, VSC, VS, VE, VSET. they all supply a certain voltages that all have to be supply the correct voltage in order for the y sustainer board to be working, well guess what, the VA line, which for my set needs 70volts, which upon startup quickly drops from 75volts to a jumpy 8.5-9.5 volts, which of course is nowhere near the 70 volts needed, so this quick drop in voltage is directly related to the screen fade upon startup, i found the problem now the real problem is finding a replacement power supply. hope this helsp anyone with similar issues.

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