Path: utzoo!dptcdc!jarvis.csri.toronto.edu!mailrus!ncar!ames!killer!gtmvax!dms3b1!dave
From: dave@dms3b1.UUCP (Dave Hanna)
Newsgroups: comp.sys.amiga
Subject: Re: Mouse problem
Message-ID: <195@dms3b1.UUCP>
Date: 19 Apr 89 01:09:53 GMT
References: <0545.AA0545@caleb>
Reply-To: dave@dms3b1.UUCP (Dave Hanna)
Organization: Infotouch Systems, Inc., Dallas
Lines: 37

In article <0545.AA0545@caleb> jdp@caleb.UUCP (Jim Pritchett) writes:
>Help,
>      my B2000 mouse is having an intermittant problem.  The horizontal
>movement intermittently fails. 

>                                        The vertical motion seems to work
>perfectly.  I've heard that new mice cost about $110, so a fix would be
>much better that having to buy a new one.
>
>                                         Jim Pritchett

Don't know if this is your problem or not, but I recently repaired my
B2000 because the mouse would move right bug not left.  (Real difficult
working st the extreme right side of the screen all the time!)

First, and easiest to check, it was not the mouse.  (Take your mouse to
a dealer or friend that has another 2000, and see if it works there.)

I got schematics and tore the chassis apart and swapped chips and every
thing.  I was afraid Denise was bad, but I swapped it with the one
from my 1000, and both continued to work as before.

It turned out that the lead from a bypass capacitor on the mouse input
line had been cut a little long and had worn through the plastic 
insulation sheet that separates the underside of the mother board from the 
lower shield.  It was thus shorting out the left direction mouse pulses.
I clipped it short, put everything back together and it worked fine.

That's probably not your problem, but it may save somebody some
anguish someday.


-- 
Dave Hanna,  Infotouch Systems, Inc. |  "Do or do not -- There is no try"
P.O. Box 584, Bedford, TX 76095      |                        - Yoda
(214) 358-4534   (817) 540-1524      |
UUCP:  ...!killer!gtmvax!dave        |