Connect with us

Dell M992 Monitor Clicking Noise....

Discussion in 'Electronic Repair' started by John, Apr 19, 2004.

Scroll to continue with content
  1. John

    John Guest

    My brothers Dell M992 Monitor stopped working 2 weeks
    after the warranty ran out!!!

    Instead of letting him throw it away, I took a look at it.
    I have a little experience in electronics, but I never
    troubleshooted a monitor/tv before.

    When turning it on, I hear a clicking sound. (Sounds like
    someone running their thumb nail down the teeth of a comb.)

    I took the back off of the monitor and turned out the lights.
    I can see a small diode? (clear glass with some color bands)
    arcing (inside its glass) to the clicking noise. The diode is located
    in the 7" x 5" metal "box" behind the yolk... On the circuit board
    it is marked as SK104.

    If anyone has came across this problem and/or can give me some
    insight, please respond.

    The only piece of test equipment I have at the moment is
    a Fluke 179 Multimeter.

    Thanks,

    John
     
  2. Jerry G.

    Jerry G. Guest

    There is a failure in the power supply, and or the HV drive, and or the scan
    circuits. This is not something for a beginner to troubleshoot. You will
    need a lot more than a simple DVM. It takes a lot of experience, and proper
    training to service these monitors. Depending on the problem, you will
    require the proper instruments to troubleshoot the monitor.

    The arcing you see, is not in a diode. It may be a spark gap type device
    that is discharging an overvoltage. I would have to see (and possibly the
    service manual) it to know what this is. Unfortunately, the manufactures
    will not sell the service manual, or any internal replacement parts to non
    authorized service centres.

    You can bring the monitor to a service centre that is authorized for DELL
    monitors for an estimate. It is possible that it may be able to be serviced
    for a reasonable cost. There are many safety issues to be concerned with,
    when troubleshooting monitors. The voltages and current sources used can
    cause serious injury.

    --

    Greetings,

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



    My brothers Dell M992 Monitor stopped working 2 weeks
    after the warranty ran out!!!

    Instead of letting him throw it away, I took a look at it.
    I have a little experience in electronics, but I never
    troubleshooted a monitor/tv before.

    When turning it on, I hear a clicking sound. (Sounds like
    someone running their thumb nail down the teeth of a comb.)

    I took the back off of the monitor and turned out the lights.
    I can see a small diode? (clear glass with some color bands)
    arcing (inside its glass) to the clicking noise. The diode is located
    in the 7" x 5" metal "box" behind the yolk... On the circuit board
    it is marked as SK104.

    If anyone has came across this problem and/or can give me some
    insight, please respond.

    The only piece of test equipment I have at the moment is
    a Fluke 179 Multimeter.

    Thanks,

    John
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-