This is fixable. It is caused when some material is
magnetized. The process to fix it is called
'demagnetizing'. The theory is simple: You apply a
changin magnetic field (for example, that created by a
coil with 60Hz AC), and graduately decrease the
strength of the magnetic field (for example, you pull
the coil further away from the monitor while moving it
in circle). It will fix the problem. Some monitor or
TV has build in circuit to perform the process.
vax3900
--- Jules Richardson <julesrichardsonuk_at_yahoo.co.uk>
wrote:
> On Fri, 2004-03-12 at 12:35, Witchy wrote:
> > I had the same problem with a 21" Digital job I
> rescued from Compaq since it
> > was on its way to the dumpster. I lived with it
> for a while until I
> > discovered the 'advanced' settings on the OSD,
> followed by something called
> > 'purity' that directly affected the colours on the
> diagonals of the tube.
> > Assuming that the Iiyama is a Trinitron tube like
> the DEC one you might have
> > a similar setting.
>
> Ooh, thanks - I'll give that a go. I'm sure it does
> have that option. It
> certainly has vertical convergance which is nice;
> that's what started
> drifting on my 17" screen (with no user control to
> tweak it) - I fiddled
> with the back of the tube and got things back to
> normal but now it's
> going again and prolonged use gives me a headache :/
> Hence I'm looking
> for a swap at the moment anyway.
>
> > Later it started flickering and dimming, but
> that's another story :)
>
> Well this one apparently had "wonky colours"
> according to the chap I got
> it from, but I'm sure I made things worse shipping
> it home. It broke
> free of its moorings whilst going round a sharp
> corner - one very heavy
> monitor somersaulted across the boot of the car with
> one hell of a bang
> :-(
>
> I'm amazed the tube didn't implode to be honest, or
> I didn't smash any
> of the boards. Net damage seems to be the loss of a
> 4" chunk of plastic
> from front of the casing...
>
> I am curious as to what the thin cable around the
> very front of the
> screen is supposed to do. That got somewhat battered
> when the case
> smashed. I currently have the plastic case off (and
> hence this wire
> uplugged) whilst I glue it back together, and out of
> curiousity powered
> the monitor up. It came up with a nice crisp normal
> image. Odd. Probably
> coincidence... it does suggest that whatever the
> problem is is fixable
> though (unless something's loose inside the tube
> itself I suppose)
>
> cheers
>
> Jules
>
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Received on Fri Mar 12 2004 - 08:52:11 GMT