26 Nov
2015
26 Nov
'15
9:13 p.m.
I can only say that they fail often. We have replaced lots in
our 11/70. Luckily we have had spares.
Sometimes the failure has been rather catastrofic with blown
components. I think these modules run quite hot since
discoloured pcb:s are common.
/P
On Thu, Nov 26, 2015 at 01:01:07PM -0800, Ian Finder wrote:
Hi folks,
I've begun repairing my PDP 11/40 and have tracked down the first major issue to the
H745 (-15v) regulator.
Before I dig into it, I just wanted to see if there are any common known failure cases...
Otherwise I'll just dive into troubleshooting it. :)
Thanks as always-
- Ian
Sent from my iPhone