24 Mar
2004
24 Mar
'04
9:16 p.m.
Tony Duell wrote:
You'll see a unit under the trnasformer in the centre. There are some
little white plugs at the bottom -- unplug those (and the external ones
to the power controller if present). Unplug the white plastic edge
connector above them. Remove the screws on the bottom of the PSU (it's
either 3 or 4, I forget). The power control unit (relay box,
essentially) and the 15V regulator board now slip out of the back of the
PSU chassis. You cna now get to the +15V regulator to repair it.
Ah! many thanks!
(there are days when I think I should have either been a building super
or a DEC field service tech :-)
The circuit is really simple, and repairing it
shouldn't take that long!
I assume you have prints.
I do have prints (from bitsavers - what a marvelous resource)
I discovered the BA-11K prints also have schematics for the various
regulator modules. Very handy.
-brad