20 Nov
2014
20 Nov
'14
1:38 p.m.
Roe Peterson roeapeterson at gmail.com
I would remove all the boards, blow it out, insert the
minimum board
set, (CPU, memory, DL console, maybe bus terminator depending on
backplane) and just turn it on.
That long in storage, I think that I'd probably go for powering it on with a
dummy load first. It's not _that_ much more work, and it could save some
expensive/rare electronics.
It you don't have any QBUS Minimum Load Modules, get a couple of high-wattage
resistors (down at Radio Slack, if necessary) and rig the equivalent. The
M7556 MLM draws 1A of +5V, and I like to run two for testing. RS sells
10-Ohm/10-W resistors (ISTR they had smaller ones too, but I needed to test a
12V supply, hence the 10-W), so buy four...
Probably a good idea to throw a 'scope on the DC power, too, check for
ripple, etc.
Noel