Question about Samsung HP-T4254 42 in. Plasma Television

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Twice now Samsung has had to send repair technicians to replace the panel because of either horizontal or vertical lines. This will be the third time and warranty is over in 9 days. It is hardly ever watched. What could be causing the panel to go??? I don't want it happening again when warranty is over! Thanks

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  • connekeke May 06, 2010

    Hi, and thanks for your reply.

    What is your level of experience with Plasma TV repair?

    Is this something that is unusual?
    It has never been hit, broken or dropped. This makes no sense that we would have 3 defective panels unless something else in the TV is causing it.
    Or is it known that these panels are poorly designed/manufactured?

    I have raised hell this time and last time, but Samsung is adamant that they will not replace the TV unless the repair technician writes that it is not repairable.

    To me, getting another panel that is just going to go again soon isn't an option so I'm trying to find some bit of info that the repair tech can look into to prevent this from happening again OR some way I can influence him to say it's not repairable.

    I don't have enough info at this time.

  • connekeke May 06, 2010

    Hi, and thanks for your reply.

    I found your qualifications after I replied. I hadn't noticed that section before.

    My model number is HP T4254.

    It just seems like more than coincidence that I've had 3 bad panels. Logic tells me either something else in the TV is behaving wrong and causing this, or Samsung must have a problem with this panel in general.

    Is there absolutely nothing in the TV that can cause a panel to develop either horizontal or vertical lines? Something wrong with the power that's causing pixels to blow (I'm sure this sounds stupid, but I'm not a techie!) or any other thing that can affect this?

    I have been calm but angry with them and have reiterated over and over that this this tv has serious problems and continuing to repair it when we *know* it's gonna go again is not a workable solution. I have politely but firmly dealt with this and they are just not backing down. Talked to a supervisor this time and she gave me the same song and dance. "If it's repairable - that's what we'll do."


  • connekeke May 06, 2010

    I'm sure it's hard to diagnose without seeing the unit, but you've done everything you can, I'm sure. I now have some info to talk to the repair guy with, and that's what I was looking for.

    You've gone the extra mile and I hope it pays off for me.




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Hi there
To answer your question;
First make sure to have a good contact with samsung about this problem.
If you,re talking about the display panel, it usually carries a longer(not specified) warranty.
There is nothing in particular that can cause the display panel to go beside the panel itself or being hit and broken.
So make sure to keep on top of it and raise hell if you have to, until the problem is fixed.
It is not your problem if they could`nt fix it right the first time.
Hope this help Good luck

Posted on May 06, 2010

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  • Jacques Marin
    Jacques Marin May 06, 2010

    First , I actually am a working tech that has been around since the seventies and i do this primarily to help people.

    I can see that samsung is trying to cover it`s track when it comes to what i think is a series of bad panel.

    It is also my experience that they(samsung) will replace your set if you berate them enough.

    It is not a normal working situation for a tv set to have a repeated problem like yours, no matter what the cause is, or who`s fault it is.

    I will look and see if i can find anything in particular as far as your model is concerned, about bad display panel.

  • Jacques Marin
    Jacques Marin May 06, 2010

    By the way: About 75% of the tv`s we repair now are either plasma or lcd.

  • Jacques Marin
    Jacques Marin May 06, 2010

    The picture problems horizontally are usually caused by y-sustain driver boards (upper and/or lower) or the xsustain board.

    And vertically you`d suspect the control/logic board or the panel itself.

    If the power supply voltages called VS and VA are out of range it may overdrive the panel but usually causes pixels to flare(Stars like dots in the screen) as a visual sign.

    I don`t know who`s doing their service but maybe they should start to suspect some of those boards.

  • Jacques Marin
    Jacques Marin May 06, 2010

    Was my pleasure and i hope it works out o.k

    I`ll still be around if you need some help, just post your question here.

    Good luck



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