Re: More MVII Hardware Help

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Article #2216

#2216

From: Terry Kennedy, Operations Mgr
Date: Sat, 13 Oct 1990 11:27

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In article <Bw7Zq1w163w@zl2tnm.gp.govt.nz>, 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

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Message-ID: <1990Oct13.112742.612@spcvxb.spc.edu>

Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!wuarchive!psuvax1!rutgers!njin!spcvxb.spc.edu!terry

References: <1990Oct9.195516.598@spcvxb.spc.edu> <Bw7Zq1w163w@zl2tnm.gp.govt.nz>

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Path: arc1-ca.pugleaf.net!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> <Bw7Zq1w163w@zl2tnm.gp.govt.nz>
Organization: St. Peter's College, US
Lines: 21

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