Path: utzoo!attcan!uunet!husc6!mailrus!ncar!ames!pacbell!sactoh0!tree!asmodeus
From: asmodeus@tree.UUCP (Jonathan Ballard)
Newsgroups: comp.sys.cbm
Subject: Re: Help troubleshooting C64 lockup
Keywords: C64, lockup, troubleshooting
Message-ID: <235@tree.UUCP>
Date: 12 Mar 89 02:33:47 GMT
References: <1661@trantor.harris-atd.com> <1482@csd4.milw.wisc.edu>
Organization: TREE BBS (916)-349-0385 Sacramento, Ca
Lines: 31

In article <1482@csd4.milw.wisc.edu>, jgreco@csd4.milw.wisc.edu (Joe Greco) writes:
> In comp.sys.cbm article <1661@trantor.harris-atd.com>, bbadger@x102c.harris-atd.com (Badger BA 64810) wrote:
[....]
> 
> It sounds to me like a brain dead (hehe) 64.  Probably a blown 6510.
> Failing that, a PLA chip.  It's not too easy to tell when problems are
> more complex than that.  Bad RAM, bad logic, all cause similar symptoms.
> 
> With that many spare parts, you shouldn't have problems finding the
> bad chip.
> 
> BTW, sometimes 40 pin sockets are "loose."  Wiggling a chip a little
> sometimes cures mystery problems.

This is not always true.   Commodore power supplies go out often in this
is one syptom.  I found most of my problem related to a partial dead 
power supply that is about to go all the way out.  The power supply will
make it look like the chip are going out because it doesn't always give
full power when they are going out.   So those 20 chips may all be working
just fine!  And so all the other C= computer you have.  
 
I've heard that third party power supplies are better then Commodores.
Sometime they cost more sometimes they're less.   Usually they are always
not as hot! 


-- 
----Asmodeus - Jonathan Ballard  ..!csusac!tree!asmodeus
				 ..!pacbell!sactoh0!tree!asmodeus
"I'm going to create the best game ever heard of!
	Might take a few years thou..." -me