Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!ubc-cs!van-bc!rsoft!mindlink!a344
From: a344@mindlink.UUCP (Tom Klok)
Newsgroups: comp.sys.atari.8bit
Subject: Re: Where Can I Repair/Replace a Tracker Ball?
Message-ID: <412@mindlink.UUCP>
Date: 25 Jul 89 09:10:12 GMT
Organization: MIND LINK! - British Columbia, Canada
Lines: 18

In <13430001@hpdtl.HP.COM> wallace writes:
> I recently picked up an old Atari 400 at a garage sale.  The (Wico) tracker
> ball that came with it registers motion left-to-right and down, but not up.

I too have a Wico track ball, and mine is also dead.  While attempting to
modify it by adding an autofire circuit, I think I blew up the chip. Does
anyone know of a source for replacing this chip?  I've tried local parts
retailers without luck.

The chip is made by Motorola, and marked:
   SC87152P
   21-5316
   JG28239

Any help would be appreciated.  David, if you have no luck fixing yours,
would you consider selling me your chip? :)

Tom Klok           a344@mindlink.uucp