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From: marty@ism780c.UUCP (Marty Smith)
Newsgroups: net.micro.pc
Subject: Re: PCAT Real-time Clock Problem
Message-ID: <3662@ism780c.UUCP>
Date: Thu, 25-Sep-86 11:59:25 EDT
Article-I.D.: ism780c.3662
Posted: Thu Sep 25 11:59:25 1986
Date-Received: Fri, 26-Sep-86 20:45:34 EDT
References: <372@briar.UUCP>
Reply-To: marty@ism780c.UUCP (Marty Smith)
Organization: Interactive Systems Corp., Santa Monica, CA
Lines: 20

In article <372@briar.UUCP> brb@briar.UUCP (Brian Bertan) writes:
>The Real-time clock on my PCAT does not tick once I turn the machine off.
>On power-up, it contains the time at which I last powered down.  I thought
>that it might be the battery, however, the configuration and time remain
>stored in the non-volatile RAM.  Any suggestions for diagnostics/repair?
>
>This problem is fairly recent; the beast was working fine for almost a year.
>
I had a similar problem with my AT clone (American Micro Tech.) when I first
bought it.  The problem turned out to be the power supply; it didn't meet
spec on an output line that was called "power is good".  Apparently the
real time clock used this line to determine whether to use the battery or
the power supply for its power.  Eventually, the problem got worse to the
point where the setup information was lost when the machine was turned off.

Anyway, the problem disappeared when AMT replaced the power supply.

					Hope this helps,

						Marty Smith