12 Feb
2020
12 Feb
'20
4:44 a.m.
Antonio Carlini wrote:
[snip]
One more screw and a few further connectors later and I can slide the
memory board (?) sideways enough to unclip the battery.
It has started to leak but it seems to only have affected the nearby
metalwork: a bit of cleaning with vinegar should clear that up. I have
to check more carefully, but so far it looks like I've been quite lucky.
Beware electrolyte wicking along the battery leads and reaching the board
that way. I have had damage done to some of the tiny tracks in the area of
the serial ports which may have been caused by this. Check carefully around
the area where the battery connector plugs into the board.
So, once I've cleaned it up, I need to test it the PSU before I hook it
up to the rest of the system. Any ideas on that front?
VAXStation/MicroVAX 2000 machines which do not have a disk have instead
a little load board with several resistors mounted on it which the power
connector for the disk is plugged into. I think I came across a similar
load board in a TK50 drive or something like that. If you can find one
of these boards, it makes a great dummy load for testing the PSU. If
not, how about a 6V and a 12V headlight bulb?
Regards,
Peter Coghlan.
Thanks again,
Antonio
--
Antonio Carlini
antonio at acarlini.com