2 Jan
2015
2 Jan
'15
2:31 a.m.
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Peter
Corlett
Sent: 02 January 2015 09:40
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Repairing A4000 leaky NiCd damage?
On Fri, Jan 02, 2015 at 04:06:48AM -0500, Charles wrote:
[...]
prophylactic
make sure to change the caps on the cpu card as
well.
I re-cap many of these for people.
Is this a specific known problem with the A3640 board, or just a fix-all for all machines of that age? It would
perhaps explain the
behaviour
I'm seeing.
Electrolytic and Tantalum Capacitors seem to be problematic on machines of a
wide range of ages. Sometimes it is obvious they have failed as the caps
have domed tops.
Some times its not so obvious I would recommend a low-voltage ESR meter
that uses less than 0.6v so it doesn't turn on any diodes.
Dave
G4UGM