Connect with us

Dell 19" Trinitron, loss of focus

Discussion in 'Electronic Repair' started by Morten Kammen, Sep 22, 2005.

Scroll to continue with content
  1. I tried to search this group for my problem, but didnt find any
    matches, maybe because my problem description is somewhat lacking in
    correct terminology :)

    My 5 year old monitor has suddenly started losing focus/becomes blurry
    about one hour after I turn it on. A switch off/on cycle will restore
    the picture to former glory for about 5-10 minutes.

    The loss of focus/blurriness is uniform all over the screen. The last
    few days before the problem started, the monitor would emit a clicking
    noise and a short flicker could be seen across the screen. This can't
    be heard/seen anymore, so I'm guessing that this component burned out
    and now causes my problem.

    Any ideas, is it fixable for a small amount of money or is it ready
    for the scrap heap?

    regards
    Morten Kammen
     
  2. 3T39

    3T39 Guest

    Hello, Morten!
    You wrote on Thu, 22 Sep 2005 15:47:11 +0200:

    MK> My 5 year old monitor has suddenly started losing focus/becomes blurry
    MK> about one hour after I turn it on. A switch off/on cycle will restore
    MK> the picture to former glory for about 5-10 minutes.

    MK> The loss of focus/blurriness is uniform all over the screen. The last
    MK> few days before the problem started, the monitor would emit a clicking
    MK> noise and a short flicker could be seen across the screen. This can't
    MK> be heard/seen anymore, so I'm guessing that this component burned out
    MK> and now causes my problem.

    MK> Any ideas, is it fixable for a small amount of money or is it ready
    MK> for the scrap heap?

    It might be a failing line transformer, but the first thing to check is the
    CRT panel for a bad solder joint where the focus lead is connected,.
    Be sure to follow the safety procedures outlined here
    http://repairfaq.ece.drexel.edu/ regarding discharging the CRT.

    With best regards, 3T39. E-mail:
     
  3. Wins

    Wins Guest

    Hi!

    Just check the CRT base and get it replaced, would cost peanuts.
     
  4. JANA

    JANA Guest

    Hi have had a defective flyback and HV assembly cause this type of fault in
    monitors. Also a failing CRT can cause this type of display as well.

    --

    JANA
    _____


    I tried to search this group for my problem, but didnt find any
    matches, maybe because my problem description is somewhat lacking in
    correct terminology :)

    My 5 year old monitor has suddenly started losing focus/becomes blurry
    about one hour after I turn it on. A switch off/on cycle will restore
    the picture to former glory for about 5-10 minutes.

    The loss of focus/blurriness is uniform all over the screen. The last
    few days before the problem started, the monitor would emit a clicking
    noise and a short flicker could be seen across the screen. This can't
    be heard/seen anymore, so I'm guessing that this component burned out
    and now causes my problem.

    Any ideas, is it fixable for a small amount of money or is it ready
    for the scrap heap?

    regards
    Morten Kammen
     
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

-