Path: utzoo!utgpu!water!watmath!clyde!att!chinet!randy
From: randy@chinet.chi.il.us (Randy Suess)
Newsgroups: comp.sys.att
Subject: Re: Boot problems on 3B1
Message-ID: <6314@chinet.chi.il.us>
Date: 14 Aug 88 15:36:03 GMT
References: <3127@emory.uucp> <227@tarkus.UUCP>
Reply-To: randy@chinet.chi.il.us (Randy Suess)
Organization: Chinet - Public Access Unix
Lines: 22

In article <227@tarkus.UUCP> jcs@tarkus.UUCP (John C. Sucilla) writes:
>
>I've seen one 3B1 that melted the plastic around one contact of
>the female connector because of a loose connection.  Right Suess?

	Heh!  Yep, sure did.  I upgraded my <100 serial number
	7300 (paid >$4000 for that sucker over 4 years ago)
	and recently added the 3b1 upgrade top so I could add
	a full hight 80 meg drive to it.  The ribbon connector
	got so hot, that it melted the plastic plug around the
	+5 volt pins.  The system was very erratic from then on.
	I finally soldered a new power connector directly to the
	power supply and the system has been stable since.  So,
	don't connect anything other than a low power half-height
	or 3 1/2 inch drive the the original 7300.  The power supply
	can handle the power of a larger drive, but the connector 
	can't.

-- 

Randy Suess                 * But don't underestimate raw, frothing,  *
randy@chinet.chi.il.us      * manic hardware.           -barry shein  *