[rescue] SGI 320's

[James Braid]

Andrew Weiss said the following on 16/12/2003 11:55 a.m.:
> Speaking of which... oh the irony.  I just had a service call for one of 
> these today.  The LCD panel video daughterboard is probably the issue.  
> The thing has horizontal travelling defects (multicolored vertical 
> stripes that look like a set of NMR data before a Fourier Transform 
> [vertical scribbles very close together <no gaps> of varying length] 
> that show up more on black backgrounds and such).  They travel like a TV 
> with bad vertical hold settings.  The VGA signal is good.  Anyone have 
> any ideas.  My first inclination is the daughterboard, but then I was 
> trying to figure out what would contaminate a digital signal in that 
> fashion.

Try replacing the power supply. Had what sounds like the same thing 
happening on an O2 w/1600SW at work. Replaced the power supply and the 
problem went away. Just used a generic PSU with the same ampage/voltage 
ratings.

Cheers, James