27 Apr
2011
27 Apr
'11
4:54 p.m.
From:?Ethan Dicks <ethan.dicks at gmail.com>
Did you have to do any work on that -8/S? ?I have one that needs a lot
of replacement bulbs and some sleuthing in the "lock" circuit (the
switch is fine, but the machine behaves as if it's always in "lock"
mode).
We (RICM) were very lucky with this donated machine, and everything
works. The main power supply lasted about one hour after reforming the
caps. We actually had a brand-new 40 year old spare power supply for a
replacement. We had to clean the switches, but they generally work OK.
All of the bulbs worked, but one is bright. I have been told that we
will break bulbs trying to replace the bright one so we will leave it
alone. The system ran for about another 5 hours before the power
supply for the PT08, PC01, PC02, and PC03 suffered the same fate and
shorted the cap in the ferroresonant circuit. New caps from eBay fixed
it.
I am interested in corresponding with PDP-8/S owners. There doesn't
seem to be very many of these slowpokes in existance.
--
Michael Thompson