27 Oct
2012
27 Oct
'12
4:13 p.m.
Tony,
Sorry, didn't get to the PERQ monitor this weekend. Francis was looking at the 2645
(with me sorta offering moral support). Hopefully get back to the 2645 next week.
PERQ's in the queue.
--Colin
ard at p850ug1.demon.co.uk wrote:
My recollection is it was both rolling and skewed. I need to get it in
Right... Sounds liek capacitor trouble at a first guess..
the queue for our CRT doctor to look at. He's
got a never ending stream
of Cubs to deal with supporting our BBC classroom systems. I have to
Ah, the Microvitec Cub. I remeber those... They are one of the few
'consumer' monitors of the period to use an EHT multiplier module (a
tripler IIRC), most small colour monitors went over to the diode split
line output transformer. The tripler design is probalby easier to fix --
the transofmer is less stressed ('only' 8kV o nthe end of the HV winding)
and tends to last better. The tripler is a potted module, but it's
possible to make an equivalnet or to find soembody who still has a
'universal tripler' on the shelf....
nudge the PERQs monitor in among them, as well as
an HP 2645 scan card
that's puzzling me. I may have mentioned (?) I took the expedient
measure of swapping the base from one monitor for the other to address
the cable sheathing issue we had. This leave us the backup monitor on
You mentioend the cable problem. It's is. alas, common on PERQ 1 machines.
I guess you've not managed to track down the fault in the monitor, then.
The PRERQ 1 monitor is not too unconventional from what I remember, and
it not a bad one to learn on. You should dive in with a 'socpe....
the injured list waiting for the doc.
I wonder if it would be worth gettign the repairer to appear on this
list, that way we can cut out the middle man and reducew the chance of
errors...
-tony