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 *