replacing +15v regulator on BA-11?

From: Brad Parker <>
Date: Thu Mar 25 05:16:50 2004

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.

Received on Thu Mar 25 2004 - 05:16:50 GMT

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