Let us know how it looks inside. I have a QBus load board available from
a microVax 3x00 if experts on the list deem the PSU needs a test under load
first. Certainly if signs of weathering are present (rust, dissolved and
redried precipitates, etc.) I'd say to wait. If it looks pristene I'd just
flip a coin and try it. You're going to have fun just figuring where all
the access panels lead.
uV's are getting pretty rare now, THX for your concerns.
John A.