Hi Eric,
If you are still looking for a PS, I'd point you to this as a possibility.
http://cgi.ebay.com/BK-Precision-B-K-DC-Tri-Power-Supply-1650-NOS-B-K-/260757279581?pt=LH_DefaultDomain_0&hash=item3cb658535d#ht_500wt_1156I had been scouring EBay for old BK Precision PS to purchase for myself as I'm just starting to get back into electronics.
I had stumbled across this after the listing has expired after seeing tons of these, in crappy condition, with no manual being sold for too much money. I had emailed him asking him if he would be relisting and he said he would in a week or so. In the meantime, I found another PS that I decided to jump on and not 4 hours after I did that, he re-listed. :/
This guy has a brand new old BK precision 1650 (2 x 0-25v .5a + 1 x 5v 5a, series/parallel/tracking modes) *with* the manual & leads starting at $75 bid or BIN $110.
It's one of those PS's that BK sold the rights to the manual so everyone want's $25 or more just for the damned manual.
Not sure if you're looking for something fancier, but thought I'd post this in case you weren't. If you do end up with it, I did manage to locate the schematics and parts list for the unit elsewhere on the web and can point you to it or send you the files.
Disclaimer: This is not mine, that's not me and, although I have bought an item from him last week and it went fine, I can't vouch for him in any way other than what I describe here!
Take care,
John