Perq 2T1 display fault

From: R. D. Davis <>
Date: Sat Feb 7 19:34:56 2004

Quothe Jules Richardson, from writings of Sat, Feb 07, 2004 at
11:35:06PM +0000:

> Got a Perq 2T1 with the KME 1514 portrait monitor - the display on the
> front of the unit gets as far as 999 on power-up so it's looking
> reasonably healthy. Only problem is an unstable display; it seems to be
> missing out every 4th or so scanline, plus there's some horizontal
> instability (I can see what appear to be characters on the display, but
> they aren't readable at all)

One of my PERQ T2's had a similar problem years ago, but that was with
the 19" landscape Moniterm monitor. To solve the problem, I simply
replaced the PLL chip in the monitor.

> Anything prone to giving up in these monitors? From looking on the web
> it appears they have a few custom parts in them :( (of course it's
> *possible* the fault is in the system, not the monitor I suppose)

Did you try reseating the boards or just letting the maching run for
hours and hours? Is the problem intermittent?

> Oh, and if anyone's dishing out Perq wisdom there's also a Perq 1 with a
> display fault too - on that one the image is centered on the screen, but
> squashed into about 80% of the normal width, and maybe 10% of normal
> height. It's also very non-rectangular in nature.

Never experienced that problem with my PERQ-1 systems... the only
major thing that ever went wrong with them were head crashes. :-( For
those not familiar with these machines, they had either SA4004 or
SA4008 14", 12MB and 24MB, hard drives... not easy to find
replacements for, alas.

Copyright (C) 2003 R. D. Davis The difference between humans & other animals: 
All Rights Reserved            an unnatural belief that we're above Nature &  410-744-4900  her other creatures, using dogma to justify such         beliefs and to justify much human cruelty.
Received on Sat Feb 07 2004 - 19:34:56 GMT

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