31 Aug
1999
31 Aug
'99
7:31 a.m.
On Tue, 31 Aug 1999, Tony Duell wrote:
[snip]
With any PDP11 -- No, Any PDP -- No, any computer --
the first task is
to get the power supplies working. If you've got a missing/low power
rail, fix that first. There is no point in looking for logic faults
until the supplies are right.
Sure, but the thing is, the PS seems to be fine when there's no logic
plugged in. It puts out -15VDC right on the money. When I connect all
the mate-n'-locs to the logic cage, the voltage dies down severely.
Doesn't that indicate a 'logic' problem? Or at least a short somewhere on
the logic boards?
I'm going to try plugging in only one power jumper at a time,
testing after each one. Maybe that'll trim down the area the short's
coming from... Please stop me if this is going to blow something up. I
don't know what else to try at this point...
thanks.
jake