Path: utzoo!utgpu!watserv1!watmath!att!dptg!mtuni!psu
From: psu@mtuni.ATT.COM (Paul Siu)
Newsgroups: comp.sys.mac.hardware
Subject: Re: ADB and blown motherboards
Message-ID: <2848@mtuni.ATT.COM>
Date: 5 Mar 90 17:05:59 GMT
References: <1494@key.COM> <1738@sequent.cs.qmw.ac.uk>
Reply-To: psu@mtuni.ATT.COM (Paul Siu)
Organization: AT&T Bell Laboratories, Middletown, NJ, USA
Lines: 14

In article <1738@sequent.cs.qmw.ac.uk> davide@cs.qmc.ac.uk (David Edmondson) writes:
>In article <1494@key.COM> jbr@hongkong.key.COM (Jeff Rubin) writes:
>>
>>It was reported by several people that it is unsafe to plug and
>>unplug ADB devices when the Mac is powered on.  Some have even
>>reported blown chips on the motherboard that were attributed to
>>this type of manipulation.
>>
I remember seeing an article about the dangers of ADB.  The min-din plugs are
so close together, and when you plug the plug in while the machine is on, and
the pins get bent and touch together, the ADB chip gets fried.  Your machine
will go out to lunch.  Apple will repair the damage, but they'll repair it by
replacing the motherboard instead of replacing the chip, so repairs are quite
expensive.