on 2/16/04 7:07 AM, [EMAIL PROTECTED] at [EMAIL PROTECTED] wrote:

> Hi,
> 
> I have a pmac7500/100 upgraded with a sonnet crescendo 500mhz PCI card and
> 320MB memory.  The monitor in place is just as old, being a UMAX D1700.  Now,
> my first guess is, this monitor has lasted longer than it should have and it
> is now dying.  But, just in case, I'm wondering if this jumping thing that the
> screen is doing can be stopped.  It started suddenly and I have made no
> changes to my system for quite a while.  Basically, all the computer is used
> for at this point is word-processing and the internet, with an occasional
> heavy use of photoshop, illustrator and quark.
> 
> Just to be clear, the screen trembles and jumps in no particular rhythm and
> not really related to the surface it is on.  I clean it regularly and noticed
> the jumping stopped momentarily after I dusted it with one of those magnetic
> cling dusting cloths (a swiffer).   Any ideas? Please email me directly off
> list at the aol address above.
> 
> Thanks,
> 
> tamara 


It CAN be a prelude to flyback transformer failure. Tha's the device that
helps the cathode ray guns spread the picture all over the screen. Sometimes
a re-soldering can prolong it's life. But the high voltages present inside
keep it from being a project for the uninitiated.


Jeff


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