8 Feb
2016
8 Feb
'16
11:38 a.m.
-----Original Message-----
From: cctech [mailto:cctech-bounces at classiccmp.org] On Behalf Of tony
duell
Sent: 08 February 2016 15:25
To: General Discussion: On-Topic Posts <cctech at classiccmp.org>;
jdr_use at bluewin.ch; classiccmp at classiccmp.org
Subject: RE: The PDP11/04 has landed..
10.5"
I have one of these on my restoration list. I know the PSU does not
work, and that others have tried to fix it before me, who probably
know PSUs much better than I do. It has core memory so I really would
like to get his one fixed. I have never seen a PSU for it come
available in the UK or Europe, so it looks like it won't be an easy
job. :-(
Which mounting box is it? (The 11/04 could certainly come in 5.25" and
versions, there may have been several versions of
each). The common 10.5"
one, BA11-K IIRC, is a fairly easy supply to work on, it's a big mains
transformer and the DEC switching regulator bricks.
The common 5.25" one, with the H777 PSU, is a bit more nasty, the H777 is
a
normal-ish SMPSU. I have worked on both.
Sadly it is a H777. I have not even opened it up to look at yet. Until
recently I was fixing the PSU in my rtVAX 1000 (H7864, in a BA23) and the
H7874 from my VAX 4000-500, then I would still like to fix the H7140 from my
11/24, before getting to this one.
Regards
Rob