Dead pixels in LCD dash

Discussion in 'Electronics' started by traser, Aug 26, 2006.

  1. traser

    traser Member

    Messages:
    48
    Joined:
    Mar 15, 2006
    Car:
    CLK55 AMG
    Hi,

    Occasionally in the gear and time display some of the pixels are missing. Next day they may be back or others may be dead. Is this a known issue or has someone seen it before? The car is a W208 CLK.

    Thanks!
     
  2. Parrot of Doom

    Parrot of Doom Hardcore MB Enthusiast

    Messages:
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    Joined:
    Dec 13, 2005
    Location:
    Manchester, UK
    Car:
    1997 R-reg W210 E300TD saloon
    Is it heat related? I'd often get this on my Audi A4, when the interior of the car was warm more pixels would die.

    I very much doubt there is a way to fix it other than replacing the entire LCD. A dealer might just sell you the entire board for a fortune, but I would guess anyone handy with a soldering iron and a few brain cells could remove one from a scrapper.

    A total guess here, but whatever IC controls that display may be running hot and malfunctioning - in a similar way to a computer gfx card behaving strangely when too hot? Total guess though.
     
  3. jaymanek

    jaymanek Authorised Forum Sponsor Authorised Forum Sponsor

    Messages:
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    Lots of Mercedes!
    this is very common. I havent repaired any of mine recently, but there used to be adverts in the back of the autotrader of guys that would repair LCD's.. much cheaper than the replacement parts...
     
  4. OP
    OP
    traser

    traser Member

    Messages:
    48
    Joined:
    Mar 15, 2006
    Car:
    CLK55 AMG
    I suspect it's not heat related as there are dead parts of the display all the time, but sometimes a few come on and off during driving.

    Quite odd. Is it related to the model of car or MB in general, do you know?

    Thanks!


     
  5. Howard

    Howard MB Club Veteran

    Messages:
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    Location:
    Toad Hall
    Car:
    CLS 500 / A 150
    We get the same on the temp display of our w208 CLK 430

    The large main display is fine, but the left hand temperature one has a few missing, can make it difficult to distinguish between 1 degree and 7 degrees for example ...
     
  6. pluggers

    pluggers Hardcore MB Enthusiast

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  7. OP
    OP
    traser

    traser Member

    Messages:
    48
    Joined:
    Mar 15, 2006
    Car:
    CLK55 AMG
    Thanks, I'll contact them.


     
  8. MartAD

    MartAD Member

    Messages:
    41
    Joined:
    Aug 23, 2006
    Location:
    Hampshire
    Car:
    CLK320 - 01
    It's the plastic ribbon cable that attaches to the board, the rubber pressure pad above it is inadequate, so the ribbon cable loses connectivity.

    A post from a few days ago has a poor explanation of my fix
     

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