Path: utzoo!attcan!uunet!seismo!sundc!pitstop!sun!amdcad!ames!elroy!jpl-devvax!edson
From: edson@jpl-devvax.JPL.NASA.GOV (Edson Smith)
Newsgroups: comp.sys.cbm
Subject: Re: C64 thermal(?) problem
Keywords: help
Message-ID: <2999@jpl-devvax.JPL.NASA.GOV>
Date: 6 Oct 88 16:52:56 GMT
References: <4567@mtgzz.att.com>
Reply-To: edson@jpl-devvax.JPL.NASA.GOV (Edson Smith)
Organization: Jet Propulsion Laboratory, Pasadena, CA.
Lines: 19

In article <4567@mtgzz.att.com> gjs@mtgzz.att.com (g.j.shevchuk) writes:
>I'd like to get some ideas on the cause of the problem I've been having
>the last several months with my 64.  When turned on, it works fine for
>maybe an hour or so, and then at some point the screen image starts
>breaking up in various spots with speckles, and within 15 - 30 seconds
>the whole screen is just a random array of multi-colored speckles.
>
>George Shevchuk
>mtgzz!gjs

I had this problem too, and my local C-64 repairman was able to trace
it to a bad interface on the board where the power supply plugs into 
the machine.  The power supply itself was fine.  Apparently, once the
machine warmed up to a certain temperature, something started to lose
it, resulting in the random color pattern described.  It cost me about
$35 to get it fixed.  Sorry I can't be more specific, but hey, I don't
do hardware!

Edson Smith  OAO/JPL  edson@devvax.jpl.nasa.gov  ames!elroy!jpl-devvax!edson