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TFT monitor info

Discussion in 'Electronic Repair' started by Dave Burt, Oct 25, 2003.

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  1. Dave Burt

    Dave Burt Guest

    I have the oportunity of getting hold of a few broken TFT monitors (non crt
    monitors) the trouble is I don't have much of an idea of what's inside them
    and how they work! (I have an HNC in electronics and am OK with crt
    monitors) , has anyone come across any info on the web (or anywhere else for
    that matter) about these monitors please.

    Thanks

    DaveB
     
  2. James Sweet

    James Sweet Guest


    Broken ones are worth just about zip, all that's inside them aside from the
    display panel itself is a small driver board and an inverter for the
    backlight, both almost exclusively tiny SMT components. About all you can
    hope to fix on them is replacing a burned out backlight tube, but then you
    have the challenge of finding the often odd sized tubes with the correct
    color temperature.
     
  3. Hellraiser

    Hellraiser Guest

    Funny, I bought 3 faulty TFT monitors and repaired all three. Must have been
    lucky I guess :)

    Hellraiser..........>
     
  4. James Sweet

    James Sweet Guest

    What was wrong with them? Occasionally you do get lucky, I've fixed a number
    of DVD players that had relatively simple faults, but few can hope to do
    component level troubleshooting on high density SMT boards.
     
  5. Hellraiser

    Hellraiser Guest

    The Dell had a knackered PSU connector, the Philips had a dodgy inverter
    board (one of the transformers had failed), and the Fujitsu had a dodgy
    inverter board which when it failed also knocked out a couple of components
    on the mainboard. All were restored to health - most of the time the serious
    components keep working, it's usually trivial faults for the most part.

    Hellraiser.........>
     
  6. uk-hamman

    uk-hamman Guest

    hmmmm
    if these monitors are free than you have nothing to loose
    simply throw them away if you cannot fix them .

    if you are paying for them , then beware.
    there is not a lot in them , mainly a psu-board / switchmode inverter
    board , and a tube . and lots of surface mount components
    and ic's .. and a little tricky to work on in general

    its up to you , but i have seen these beasts sell for
    139 pounds , brand new for a 15-inch version .

    chers de Paul
     
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