[rescue] SGI 320's
larrys at lexisnexis.com
Sat Dec 20 18:08:59 CST 2003
Andrew Weiss <ajwdsp at cloud9.net> wrote:
> 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.
Hmmm...old fashioned knowledge asks: Got a filter cap going south
in the power supply?
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