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TFT monitor info

Discussion in 'Electronic Repair' started by DaveB, Apr 28, 2004.

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  1. DaveB

    DaveB Guest

    Hi All,
    I've been trawling the net for info on TFT monitors - can't find any! -
    loads on CRT's though.
    Does anyone know of any TFT info on the net?
    Also how can I tell if the screen of a TFT monitor is dodgy as opposed to
    the driver/processing/psu circuitry?

    Many thanks

    DaveB
     
  2. Jerry G.

    Jerry G. Guest

    TFT monitors are really LCD monitors. Infact there are now more models of
    LCD monitors being manufactured than CRT type monitors. From the articles
    that I have been reading, CRT monitors will no longer be manufactured within
    the next few years.

    Start here, and keep going for ever!
    http://www.google.com/search?q=lcd+monitors&btnG=Google+Search

    To test an LCD monitor without the use of drivers, you should run it on the
    proper test generator unit. This is something that the service centres would
    have. Using a proper test generator, you should be able to test the monitor
    in all of its modes for proper operation.

    If you suspect a particular computer, your easiest way to test it is to try
    it on another computer, or bring the monitor to a service centre to have it
    properly checked for performance.

    --

    Greetings,

    Jerry Greenberg GLG Technologies GLG
    =========================================
    WebPage http://www.zoom-one.com
    Electronics http://www.zoom-one.com/electron.htm
    =========================================


    Hi All,
    I've been trawling the net for info on TFT monitors - can't find any! -
    loads on CRT's though.
    Does anyone know of any TFT info on the net?
    Also how can I tell if the screen of a TFT monitor is dodgy as opposed to
    the driver/processing/psu circuitry?

    Many thanks

    DaveB
     
  3. Andy Cuffe

    Andy Cuffe Guest


    In my experience, if you see any horizontal or vertical lines, or
    blank sections on an otherwise good picture, the LCD is bad. The
    cause of this is usually broken connections between the drivers and
    the glass, or bad drivers. Neither problem is repairable without
    highly specialized equipment. If you get a totally blank screen, or
    one completely filled with random colored vertical lines it's probably
    a problem with the processing board. Most problems I've seen with LCD
    monitors and laptop displays have been a bad LCD panel, or bad
    soldering, or a bad or loose data cable to the LCD. Bad back lights
    and inverters are also fairly common. Damaged LCD panels are a good
    source of replacement back light tubes.

    The strangest back light problem I have seen was a laptop screen with
    a back light tube that was emitting only pure red light. The color
    was stable and bright, but totally red.
    Andy Cuffe
     
  4. James Sweet

    James Sweet Guest


    Perhaps somebody replaced the tube with one of the colored ones sold for
    modding PC cases and such?
     
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