9 Feb
2004
9 Feb
'04
5:37 a.m.
On Sun, 2004-02-08 at 01:22, R. D. Davis wrote:
Yuck. Not sure how alive that one is. I can tell they're both going to
be another couple of those headache machines where I can't work out how
to back up the data ready for when the drives do eventually die :(
We may have drive replacements for the Perq-1 in store, but I'm betting
we don't have original install media...
cheers
Jules
Quothe Jules Richardson, from writings of Sat, Feb 07,
2004 at
11:35:06PM +0000:
Hmm, there isn't a lot in the way of ICs in these monitors by the looks
of it - I noticed an LS device which is presumably part of the sync
separation circuitry, then there was a TDA1170 device on the board too.
I seem to remember those are used in Microvitec CUB monitors and are
prone to failure (I have some spares somewhere), but I can't remember
what sort of symptoms they give when they fail.
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. Did you try reseating the boards or just letting the
maching run for
hours and hours? Is the problem intermittent?
yes, yes and no :-)
It doesn't seem to be temperature-related anyway. At least the HV
circuitry is still alive, so fingers crossed it's fixable...
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.