[geeks] Sun-3/60 PS schematic?

[Mouse]

I've got a Sun-3/60 I recently pulled out of storage and tried to fire
up.  It has probably been mothballed for something like 25 years; the
CPU board has a sticky-note in my hand saying that, in 1997, at least
some of its functionality worked (the rest was untested).  It might not
have been in this case, but it seems likely it was.

It's dead.  I flip the switch and nothing apparent happens - no fan
spinning, no lights lighting.

I opened it up and have verified that power is getting at least as far
as the big 400V 470µF cap in the power supply - that bit me when I got
careless handling it, and it proved to have over 150V on it even
after something like five minutes out of the box with no power feed at
all.  (It still had 50V on it the next day, even.)

I infer that something is wrong with the input side; it's clearly not
draining power from the rectifier-and-cap input stage at any
significant rate.  Nothing is obviously at fault to the eye, though;
the only notable thing is that the PCB is a bit darkened in the
vicinity of some of the highest-power components.

I probably could trace the circuit, but I don't really know switching
power supplies and would have to guess at things like transistor and
transformer pinouts.  So I'm wondering if perhaps the schematic is
known.

I went to check bitsavers, in case it's lurking there, but connection
to ftp.bitsavers.com timed out. :-(

The supply is marked with multiple things which could be version
numbers.  It's a single-sided PCB; the foil side says, at various
places, "BOSCHERT 510075 REV B", "MADE IN HONG KONG", and "894VO".
The 894VO is in the foil etch; the others are in the solder-mask.  In
the printing on the component side, I see the name "COMPUTER PRODUCTS"
with a rearing horse logo; under these is the text "POWER CONVERSION".
Elsewhere, I find the number 700075-01 REV___, in the underlined blank
of which is handwritten E.  There is a small sticker reading, in
dot-matrix printer type, "HXL 7421".  There is another sticker on the
transformer between the input and output portions; this sticker has the
"COMPUTER PRODUCTS" name again, but this time under it is the text
"BOSCHERT INCORPORATED", and no rearing horse.  Also on this sticker I
find a triangle containing "2875", and the three lines

NFS116-7630
INPUT: 100-240 VAC
8850 180W 47-63HZ

where the "INPUT:" and the triangle are part of the printed sticker and
the rest is dot-matrix printed.  (There are other printed bits, none of
which look likely to be useful: there is an H in one corner, the
approval thing that looks like a backwards R with the upright forming
the left edge of a U, a CSA logo beneath which is the text "LR50913",
and, across the bottom in fairly small type, "COMPONENT TYPE CUSTOM
RECTIFIER", and a "TM" next to the COMPUTER PRODUCTS logo.)

I've considered using a stock power supply instead, since it looks as
though this one is putting out just +5, +12, and -5.2.  But that would
entail relatively irreversible changes to either this PS or the case,
which I would prefer to avoid unless and until I give up on fixing this
power supply.

I did break out the work "smart"phone and did a few searches.  The
closest thing I found was a different Boschert power supply schematic,
but it was definitely different; for example, it has two 200V 470µF
caps and a voltage-select jumper instead of this one's universal
voltage and single cap.

So, anyone happen to know of a schematic?

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