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Displays Magnet damage to LCD TV

Discussion in 'Hardware' started by I'm_Not_A_Monster, 12 Apr 2011.

  1. I'm_Not_A_Monster

    I'm_Not_A_Monster Hey, eat this...

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    my buddy's nephew did a number on his flatscreen with a magnet. i couldn't find a degauss option in the menu (probably due to it being an LCD) and these don't look like they'll be disappearing soon since the pics were taken a few days after it happened. i saw this video online of a guy fixing a CRT with a magnet in the chuck of a drill, would that work or is there another solution for fixing the screen?

    [​IMG]
    the neon green part of this one worries me. it looks like theres "internal bleeding" of the LCD membrane

    [​IMG]
    it's a little hard to see from the pic but the spots are all either gray or black
     
  2. outlawaol

    outlawaol Geeked since 1982

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    Thats wild. I didnt know LCD's could be affected by magnets. Go figure...
     
  3. Deders

    Deders New Member

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    I remember doing the same to my old CRT tv most of the screen wasn't the right colour, a few days later I switched it on gain and it was gone.
     
    Last edited: 12 Apr 2011
  4. GoodBytes

    GoodBytes How many wifi's does it have?

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    CRT's have magnets to adjust the cathode ray gun light to pass throw the whole screen. The degauss feature was put to eliminate extra magnetic fields which interrupts the main monitor magnets.

    LCD's, don't have magnets, as they don't need any.
    LCD liquid is easily affected by magnetic fields. In addition, like any magnet on a circuit board, it affects it to some degree. While this degree is minimal for any circuit board that we encounter, it does for the LCD grid, potentially even damaging them. I can't give you more details, and don't know how strong a magnet is required, as I am no expert.

    My guess, is that you pulls the LCD liquid out of their pixels with the magnet.

    The bad news, is that there is no way to fix this problem.
     
  5. law99

    law99 Custom User Title

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    Kids are just precious right?

    [​IMG]
     
  6. Blarte

    Blarte Moderate Modder

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    bit late for the "this is not a toy" conversation
     
  7. Picky88

    Picky88 New Member

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    As other people have said it may be damaged. I would try leaving it unplugged for 24 hours or so to see if it resets at all, cant think of anything else to try really!
     
  8. saspro

    saspro IT monkey

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    Have you tried gently massaging the effected pixels?
    Sounds strange but I've seen it work before.
     
  9. The Monk

    The Monk Member

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    The only option here is for your buddy to sell his nephew into slavery and use the funds to buy a new TV :thumb:
     
  10. Guinevere

    Guinevere Mega Mom

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    Is it also a possibility it's just pressure damage? He pressed a magnet against it and it's the pressure that's done the harm not the gear murdering magneto-energy
     
  11. Krikkit

    Krikkit All glory to the hypnotoad! Super Moderator

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    If the problem doesn't solve itself (unlikely at this stage, but worth a try) you could always try the magnet-in-drill trick. Put it in slightly off-centre to make a nice, weird field as it rotates and it might help.

    Chances are it's absolutely hosed though, it looks like the crystal has started to seep from the membranes/structures that hold them in place.
     
  12. Blarte

    Blarte Moderate Modder

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    I may start hiring my services as Mobile Smacking Man With Van
    Parents know they will be in bother smacking their kids .. hire me and don't press charges, I'll whack the little sods for you

    (disclaimer, this is not a serious business plan, do not start complaining to me and suggesting I be arrested etc etc)
     
  13. spaceman1

    spaceman1 New Member

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    dont know if this will help as its done on a crt monitor me be worth a go.
    didnt see other post but here is a vid

    lol
     
    Last edited: 12 Apr 2011
  14. I'm_Not_A_Monster

    I'm_Not_A_Monster Hey, eat this...

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    haha thats the exact video i watched online when i referenced the magnet in drill trick
     
  15. Elton

    Elton Officially a Whisky Nerd

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    CRT monitors have an In-built degaussing coil so it gets the magnetic field correctly, (I have no idea how, but CRTs are actually related to the poles).

    It's going to be tough, but I must say, that must have been a hell of a magnet. Most ordinary magnets aren't supposed to do that kind of damage.

    It looks like the panel is permanently damaged, the Liquid crystals seems to have moved.
     

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