Path: utzoo!attcan!uunet!abvax!iccgcc!husted
From: husted@iccgcc.decnet.ab.com
Newsgroups: comp.sys.amiga.hardware
Subject: Re: My A2000 power supply shuts itself off. Why?
Message-ID: <2294.275cf59e@iccgcc.decnet.ab.com>
Date: 5 Dec 90 18:26:52 GMT
References: <2166.2752a2fc@iccgcc.decnet.ab.com>
Lines: 31

In article <2166.2752a2fc@iccgcc.decnet.ab.com>, husted@iccgcc.decnet.ab.com writes:
> It looks like my A2000 power supply died. ;-(
> 
> SYSTEM:
>         A2000 approx 2.5 years old with 3meg RAM,8088 bridge board hard disk
> 
> Problem:
>         I was using it for > 6 hours and all the sudden, it looked like it
>         turned itself off. The monitor was still on but the power LED and 
>         fan and computer was off. I turned it off and let it set for 5 mins. 
>         and turned it back on and it went quit a ways through the powerup 
>         sequence but then turned itself off again. I turned it off, waited a 
>         day and tried again it started to powerup but turned itself off again 
>         during the powerup sequence.
> 
> QUESTION:
>         Is this a failure mode that anyone is familiar with?
> 

I received numerous responses to this post and would like to thank everyone of
you who replied. It saved me lots of bucks.

Apparently this is a common problem but I have missed seeing it before and
maybe others have. The problem turned out to be my cooling fan. The power supply
shuts down if the cooling fan is not drawing current. I opened up my fan and
found the problem was a fine wire for one of the coils was being rubbed by the
fan rotor and eventually wore through. It did not look like it would be
reasonable to fix the problem (it being a fine wire and in a bad spot) so I
have ordered a new one (fan) from Digi-Key part #P9984-ND. 

Thanks again for the help!