[G4] Monitor problem

[Kristen]

Well Ben, what you said was my first thought. However, this distortion seems 
to be static and when the scroll bar is moved so does the distortion. As if 
the distortion is video being displayed. If it's the SMPS caps then this 
distortion would be dynamic in appearance. Irresepctive of where the scroll 
bar is at. Since Les states the distortion is fixed with the image displayed, 
it's difficult to blame the power supply. Still.. when filter caps go bad 
more then one circuit is affected and very strange symptoms are certanly 
seen. And it's a given that electroletic caps are going to be bad! Still 
wouldn't one not suspect a video card instead?

Does this monitor plug into a wall outlet? Or the computer it's self? My Apple 
cinemax plugs into the computer only. If it's connection is computer only 
then the monitor isn't to blame (could be, but unlikely I'm saying) as it 
derives it's power and signals from the video card, which is an intermediate 
circuit to the power supply. We can't see this distortion or it's action 
so....... *shrug*

Kristen

On Sun October 22 2006 1:57 pm, Ben Smith wrote:
> Date: Sun, 22 Oct 2006 17:09:12 -0400
> From: Les Berkley <wogears at fast.net>
> Subject: [G4] Monitor problem
>
> Hello all:
>
> I just getting back into Macs because someone gave me a Sawtooth G4 400. It
> came with a 17" Apple Studio, which is where my problem is. The monitor has
> this weird behavior. When I open a fairly large window (any app will do),
> so that the scroll bar is close to the right edge (~4 inches or less),
> there is an odd wavy distortion in the window and the black edge of the
> screen, at the vertical location of the scroll tab.

" If I move the scroll tab up or down, the distortion moves with it! "

> The distortion is greatest
> when the scroll tab is smallest (i.e. long window).
~ snip ~

> Les
>
> This is a sign that the power supply regulation is failing, it is caused by
> the smoothing capacitors drying out. any half decent monitor servicing
> company can sort this out, however a new LCD monitor would probably be
> cheaper these days. Ben.