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replacing CCFT on NEC 400v LCD monitor

Discussion in 'Electronic Repair' started by John KB5AG, Sep 2, 2003.

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  1. John KB5AG

    John KB5AG Guest

    Hello, all. I got two of these neat LCD monitors, both of which have a
    picture but absolutely no light.

    After COMPLETELY disassembling them, I find the CCFT backlights are bad.
    The power supply is putting out around 500v, so it seems okay. The lamps
    just fell apart when I touched them, breaking at a darkened point near one
    of the electrodes.

    I found some CCFT lights from Alltronics.com which are the right size and
    look like they might be a good choice, but I really know nothing about them.
    Is there a better source, are there major differences in light output and
    life among different brands, etc?
    Any tips would be appreciated.

    John
     
  2. Jerry G.

    Jerry G. Guest

    If NEC will not sell you the original parts, you should try what you can
    get. Maybe they will work.

    Did you try to go to NEC first???

    --

    Greetings,

    Jerry Greenberg GLG Technologies GLG
    ==============================================
    WebPage http://www.zoom-one.com
    Electronics http://www.zoom-one.com/electron.htm
    Instruments http://www.zoom-one.com/glgtech.htm
    ==============================================
    Hello, all. I got two of these neat LCD monitors, both of which have a
    picture but absolutely no light.

    After COMPLETELY disassembling them, I find the CCFT backlights are bad.
    The power supply is putting out around 500v, so it seems okay. The
    lamps
    just fell apart when I touched them, breaking at a darkened point near
    one
    of the electrodes.

    I found some CCFT lights from Alltronics.com which are the right size
    and
    look like they might be a good choice, but I really know nothing about
    them.
    Is there a better source, are there major differences in light output
    and
    life among different brands, etc?
    Any tips would be appreciated.

    John
     
  3. john KB5AG

    john KB5AG Guest

    Hi, Jerry. I have been all over the NEC website but I haven't had any luck
    finding parts.

    A google search revealed a company called JKL components that makes them,
    and both Mouser Electronics and Digi-Key sell them. They seem to be
    considerably brighter than the one I was considering from Alltronics, and
    they're not bad in price, around $10-$12 each. I think I'll try to fix one
    monitor and if I have luck, will go for the other.
    Thanks!

    John
     
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