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  • #2087744

    Fuzzy monitor

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    by cazen ·

    A user has a CTX 19″ monitor that has gone fuzzy. Tested on various systems confirms that the monitor is at falt. All the monitor built-in settings are correct. I seem to remember this being a problem on an old tv, and the fix was something like de-magnetizing the flyback transformer coils. My question is: Is this known to be fixable or should I just get a new monitor?

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    • #3731688

      Fuzzy monitor

      by dcarr ·

      In reply to Fuzzy monitor

      Sometime de-magnetizing will work. I’ve found that you can usually adjust the focus and fix the fuzzieness if it’s not too bad. Most monitors have an internal adjustment on the back, through a little hole to re-adjust the focus. This is near or on the flyback transformer. You should use a plastic or ceramic screw driver tool while the monitor is on. If this does not fix the problem then you should problably think about replacing the monitor.

      • #3731492

        Fuzzy monitor

        by cazen ·

        In reply to Fuzzy monitor

        Poster rated this answer

    • #3731555

      Fuzzy monitor

      by otl ·

      In reply to Fuzzy monitor

      Look for a DEGAUZE button on the monitor, most have this to clear (demagnetize) the screen. If you can not find one check the manual for the monitor.

      Turn the auto-adjust feature off on the monitor and adjust it manually, auto-adjust could be messed up or dying.

      • #3731493

        Fuzzy monitor

        by cazen ·

        In reply to Fuzzy monitor

        Poster rated this answer

    • #3731546

      Fuzzy monitor

      by richard_barsby ·

      In reply to Fuzzy monitor

      If it is magnetised it usually causes poor purity rather than a fuzzy picture, it can affect the convergence but this would show up as colour misalignment usually in the corners, for the focus beeing out did it happen suddenly or over a period of time, if over a period of time then the flyback transformer (extra high voltage transformer)
      has high value resisters potted in it which can change value and if not too bad can be re-adjusted the controls are on the flyback transformer at the end of the thick high voltage lead coming from the top of the tube,
      there are usually 3 controls the bottom being the screen (G2) which is the preset brightness and the other two being horizontal & vertical focus they do interact a little so a little tooing and froing may be required. This all asumes that the heater voltage is not too low it should be between 6.0 and 6.3 volts DC. If it happened suddenly then it can be caused by an internal leakage in the tube and to clear this is not a D.I.Y. job.Best regards

      R.K.Barsby

    • #3731491

      Fuzzy monitor

      by cazen ·

      In reply to Fuzzy monitor

      This question was closed by the author

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