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Nokia Monitor Problem

Discussion in 'Electronic Repair' started by [email protected], Feb 10, 2008.

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  1. Guest

    I have a 1995 vintage Nokia Multigraph 445X 21-inch monitor that has
    recently begun to act up in a strange and mysterious way.
    Specifically, there are strange high-pitched whines and clicking
    sounds whenever the display is moving from one screen to another (as
    during start up and shut down), but not during the time when a screen
    type is being displayed (DOS-like or Windows 98SE). In fact, as I am
    typing this post in Windows, the monitor is fine and solid, and
    likewise would be if I was in MS-DOS mode. The problem is especially
    prevalent when I start up since there are several transitions between
    screen shots of the initial BIOS messages, SATA RAID controller scan,
    SCSI controller scan, and AVG boot up scan. What I find really weird
    is that the problem only occurs during these transitions. I have
    contacted ViewSonic (who took over the Nokia monitor line), but I have
    not had a response from them yet. Is there anyone out there who could
    give me an idea what could cause such a vexing problem? I have
    otherwise been very satisfied with the monitor (especially with its
    professional-level video quality) and would like to keep it going.
    Any help here would be very much appreciated, since I fear that I am
    just continuing to damage the monitor by subjecting it to these
    annoying cycles of noise...

    Thanks in advance,
    drchaos
     
  2. Baron

    Baron Guest

    The clicking sounds are the relays changing the scan settings. The high
    pitched whine could be the scan transformer or coils being swept
    through the frequency range looking for a scan lock. This could be
    because you are pushing the limits of scan range.
     
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