Xref: utzoo comp.sys.att:2658 comp.sys.ibm.pc:12604
Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!pasteur!ucbvax!janus!brand
From: brand@janus.uucp (Graham Brand)
Newsgroups: comp.sys.att,comp.sys.ibm.pc
Subject: Strange Real Time Clock fault - any hardware experts out there?
Message-ID: <23151@ucbvax.BERKELEY.EDU>
Date: 29 Feb 88 20:06:14 GMT
Sender: usenet@ucbvax.BERKELEY.EDU
Reply-To: brand@janus.UUCP (Graham Brand)
Organization: University of California, Berkeley
Lines: 21


I posted a request for help with this problem some time
ago but received very few responses. I now have a bit more information
which might be useful and, therefore, am reposting this now.

I have a PC6300 with 640k RAM, 20MB HD and DOS 2.11 which has
been working fine for the past two years. Recently, the real time clock
died. In looking at the circuit, I thought that the simplest solution
would be to replace the clock chip. As the chip was soldered directly to
the motherboard, while replacing it, I put in a socket. After replacing
the chip everything worked fine for about a day. Then the clock stopped
again. I replaced that chip with another and that worked fine - but for
only a few hours!

As the unit is out of warranty, it will probably cost a lot to
send it to the ATT dealer so I would like to exhaust all possibilities 
first. Has anyone out there experienced this problem or can suggest a
solution?

Cheers,
-Graham Brand		(..!ucbvax!janus.berkeley.edu!brand)
			(brand@janus.berkeley.edu)