Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!munnari.oz.au!comp.vuw.ac.nz!gp.govt.nz!zl2tnm!don From: don@zl2tnm.gp.govt.nz (Don Stokes) Newsgroups: comp.sys.dec Subject: Re: More MVII Hardware Help Message-ID: Date: 13 Oct 90 11:47:41 GMT References: <1990Oct9.195516.598@spcvxb.spc.edu> Organization: Me? Organised? Lines: 31 terry@spcvxb.spc.edu (Terry Kennedy, Operations Mgr) writes: > If you're getting 4V there, it isn't dust 8-(. > > Seriously, if you have a BA23 master box (with front panel halt and restart > buttons), you should have the power harness checked. The old harness can catc > on fire. The way to tell if you have the proper harness is to open the BA23 > up and look in the drive bays. The good harness is DEC part number 17-01311-0 > and uses white connectors and various colored wires. If you have yellow con- > nectors or a webbed cable (rather than individual wires) you have a potential > safety hazard. Drat. 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. 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. I can't remember what type of cable the MicroVAX I that I saw cook a power harness had. Can you (or anyone else) remember the details before I go rummaging through the "museum" looking for the offending part or hassling DEC? Don Stokes, ZL2TNM / / Home: don@zl2tnm.gp.govt.nz Systems Programmer /GP/ Government Printing Office Work: don@gp.govt.nz __________________/ /__Wellington, New Zealand_____or:_PSI%(5301)47000028::DON