Hi, folks, My PDP-11/44 has a power supply problem. Symptom: A rapid flashing of the 'DC ON' light, indicating (according to the users' guide) that one or more DC voltages is not up to spec. The kicker is that I have nothing in the way of service manual or maintenance print set. I'm kind of puzzled about why the thing died. It's been functioning perfectly well at St. Martins College for years, 24/7, without so much as a burp. The only thing I can think of is that this continuous running had one or more components stretched to their limit, and when I powered it on after over a month of power off, it pushed it over the edge. Anyway... I have no way of knowing even where to probe to see which voltage died. Even if I did manage to find it, that fscking power supply's about as complex as the CPU! If anyone's got service docs for the '44, and can help me out with some copies, that would be just grand. I'd also be open to troubleshooting via phone or E-mail. If you've got spare parts, of course, that would be ideal. I could swap modules until the bad one's isolated. ;-) This is one I really want to get working. Please give me a hand if you can. Thanks in advance. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Sysop, The Dragon's Cave BBS (Fidonet 1:343/272) (Hamateur: WD6EOS) (E-mail: kyrrin(a)jps.net) "Our science can only describe an object, event, or living thing in our own human terms. It cannot, in any way, define any of them..."