Path: utzoo!attcan!uunet!wuarchive!psuvax1!rutgers!njin!spcvxb.spc.edu!terry From: terry@spcvxb.spc.edu (Terry Kennedy, Operations Mgr) Newsgroups: comp.sys.dec Subject: Re: More MVII Hardware Help Message-ID: <1990Oct13.112742.612@spcvxb.spc.edu> Date: 13 Oct 90 11:27:42 GMT References: <1990Oct9.195516.598@spcvxb.spc.edu> Organization: St. Peter's College, US Lines: 21 In article , don@zl2tnm.gp.govt.nz (Don Stokes) writes: > I just pulled my MicroPDP-11 (11/73) to bits, and located the power > harness (under a *lot* of dust). It's part number 70-20450-01, with > yellow connectors, but separate coloured wires. Winner! Winner! You have one of the flaming power harnesses 8-) > What was the nature of the overheating problem? The part I have in my > hand looks OK, no sign of any heating. I flexed the conectors to check > if they had stiffened or become brittle from heat, and they're fine. You'll get blackening of the +5V (red wires) at the connector body. You may also get discoloration of the connector pins. I had a '73 that ran for several years with no problem, and then one day went *POOF*. No new boards, but it flamed out anyway. It's an accident wait- ing to happen. Terry Kennedy Operations Manager, Academic Computing terry@spcvxa.bitnet St. Peter's College, US terry@spcvxa.spc.edu (201) 915-9381