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DELL P1110 repair question

Discussion in 'Electronic Repair' started by Linux Lover, Feb 22, 2004.

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  1. Linux Lover

    Linux Lover Guest

    Hi,
    I found this wonderful tip on how to repair the over-brightness
    problem in my DELL P1110 monitor:

    http://geocities.com/gdaewoo_cmc1511b/cpd-e500_dell-p1110.zip

    Now... the only problem is that the last time I repaired monitors/TVs
    was about 20 years ago. I vaguely remember that there is a high
    voltage charge somewhere that I need to watch out (I am talking about
    even after the monitor is unplugged...)

    Is this still true or are today's modern monitors built to be a little
    more "technician-friendly"?

    If this is still true, could you please give me a tip on how to avoid
    discharge problems when replacing that R459 resistor on the DELL
    P1110?

    Thanks,
    Lynn
     
  2. Jerry G.

    Jerry G. Guest

    All TV sets, monitors, and many types of appliances that use electronics
    have some risk of power discharge after the power is disconnected. In TV
    sets, some of these high voltages can stay present for weeks or more. This
    all depends on the particular design of the model. The key is to handle the
    unit with caution and proper care. If a service tech had to leave a TV
    unplugged for a week to work on it, he may as well go home and join the
    unemployment line! This is why he has the proper training and tools to do
    the work that he is doing for a living.

    The TV's and monitors of today are a lot more sophisticated than that of 20
    years ago. They infact use higher voltages, and much higher currents
    internally. Therefore there is technically more chance of even greater
    injury if not handled properly.

    You should find out if this is a legitimate fix, rather than a mod to mask a
    real fault that should be serviced.

    From your description, I would think you should have the monitor properly
    serviced by someone who does this professionally.

    --

    Greetings,

    Jerry Greenberg
    ===========


    Hi,
    I found this wonderful tip on how to repair the over-brightness
    problem in my DELL P1110 monitor:

    http://geocities.com/gdaewoo_cmc1511b/cpd-e500_dell-p1110.zip

    Now... the only problem is that the last time I repaired monitors/TVs
    was about 20 years ago. I vaguely remember that there is a high
    voltage charge somewhere that I need to watch out (I am talking about
    even after the monitor is unplugged...)

    Is this still true or are today's modern monitors built to be a little
    more "technician-friendly"?

    If this is still true, could you please give me a tip on how to avoid
    discharge problems when replacing that R459 resistor on the DELL
    P1110?

    Thanks,
    Lynn
     
  3. Linux Lover

    Linux Lover Guest

    Jerry, thanks for your answer. However, it doesn't help me at all
    since I intend to do this repair myself anyway and I was looking for
    information specific to this model.

    I would appreciate any tip that would answer my ORIGINAL QUESTION. If
    no one can come up with one, I will go ahead and perform the changes
    myself using my 20-year old knowledge and safety practices.

    Thanks,
    Lynn
     
  4. Andy Cuffe

    Andy Cuffe Guest


    Have you tried running color return which should be in the color menu?
    You will have to leave the monitor on for about 30 min before you will
    be able to run color return. I've saved several recent sony monitors
    with this.
    Andy Cuffe
     
  5. Linux Lover

    Linux Lover Guest

    Andy, thank you so much!!! It worked! You just saved me from wasting
    time opening the case and performing an unncessary "repair".

    You are the best!

    Lynn
     
  6. Bob Kos

    Bob Kos Guest

    Enlighten me, please. What its this 'Color Return' selection all about?
     
  7. Andy Cuffe

    Andy Cuffe Guest

    It's a selection in the color, or option menu of most Sony made
    monitors that have a flat FD Trinitron CRT. It causes the montor to
    go through a self calibration of the gray scale adjustment. It
    displays several solid blank screens at different brightnesses and
    adjusts itself so that each gun has the corrct beam current. It's a
    great feature because it saves having to use the expensive and
    difficult to use adjustment software even after swapping a CRT.
    Andy Cuffe
     
  8. Bob Kos

    Bob Kos Guest

    Oh wow.... I swapped a tube in a 17" monitor. The red was way off. I
    figured that I had no way of properly making it right so I trashed the
    monitor. Ooops...................
     
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