RE: TECH: Ms. Pac Man reset problem

I've always thought it best to follow the
advice of Mr. Mike Ranger who says "replace the 191's
since they work very hard on PAC boards and I tend to
replace them all" (paraphrasing but you get the
point). Just replace the IC and prove to yourself
that it was or was not the problem ... no? His logs
indicate 9C is many times "faulty".

Read this too:

http://www.hypertech.com/arcade/links.asp

and the repair log section ...

  SPW
  kanata, on
  canada

-----Original Message-----
From: owner-rasterlist@synthcom.com
[mailto:owner-rasterlist@synthcom.com]On Behalf Of Bryan Kruzynski
Sent: Sunday, March 18, 2001 6:51 AM
To: rasterlist@synthcom.com
Subject: Re: RASTER: TECH: Ms. Pac Man reset problem

> The red button MUST RESET the CPU, if that is not happening then there is
a
> problem with the RESET circuit. Get that running and see what happens
next.

Yes, that is not happening. The switch works. The switch is tied to pin 9
of
9C. That input seems to be ok too. The output of 9C, pin 15, does not
change
when the switch is pushed. Is the problem 9C itself, or one of the other
inputs
to 9C???

Any thoughts??

Thank you,

Bryan

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Received on Sun Mar 18 09:19:24 2001