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Electronics REPAIR: old lcd + cheap ccfl : try this at home

Discussion in 'Modding' started by LabRat1, 1 Dec 2006.

  1. LabRat1

    LabRat1 What's a Dremel?

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    My grandfather had a viewsonic va720 17", It died, we replaced it, I got it free.

    It is now 4 years old (November 2002)
    the lamps were aging, the internal powersupply would try to fire them once and shut off after a second.

    once the lamps heat up they run fine
    I put together a powersupply with no shutdown
    (The display gets to full brightness after about 30seconds)



    the ccfl
    [​IMG]

    tools
    [​IMG]

    old AT powersupply with fan lead cut (any 12 volt power would work..)
    [​IMG]

    powersupply and back light all wired up
    [​IMG]
    [​IMG]

    The back light switch :) A true finishing touch (it's very usable now)
    [​IMG]

    As for brightness. It's not so bad for a 4 year old screen that has been in use constantly...

    Here it is vs. a 5month old LCD
    [​IMG]
    [​IMG]
    [​IMG]
    (yes I photoshopped my own cat ><)

    Now I can enjoy the amazing 30ms response time all over again :D
     
    Last edited: 1 Dec 2006
  2. LabRat1

    LabRat1 What's a Dremel?

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    [​IMG]

    I showed it to my pop this morning holding it like this...
    First thing he said was "it looks like a bomb" :waah:
     
  3. TTmodder

    TTmodder Hammertime

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    omg terrorists win :p
     
  4. Warrior_Rocker

    Warrior_Rocker Holder of the sacred iron

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    Surely you could have pulled 12v from within inside the panel itself to drive your inverters. I know one of my panels takes 12v direct input, and a few of my others spit out 12v from their internal power supplies.

    Otherwise good revival of an otherwise broken unit, interesting approach
     

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