Re: Repair advise

From: Rob Clarke <>
Date: Wed, 02 May 2012 22:18:50 +0200
Message-ID: <>
Well done Robert, lucky find! We should start an owners club :-)

I got a mint one last year as featured on Bil Herd's web site which didn't 
work either when I got it. As Steve says, the most common culprits with 
264 machines is the CPU (7501/8501) or TED (7360/8360) although in my 
232 it turned out to be the MOS 7707 own brand MUX's that were at fault. 
I replaced them with stock 74LS257's and it now works great.

I also I have a couple of spare CPU's if you need them. I can also 
provide you with a diagnostic kernal which I hacked together which can 
help you identify RAM and I/O problems.


On 02/05/2012 22:00, Robert Sprokholt wrote:
> Today I got a couple of Commodore 232's. Two are not working :-(
> Machine one: power led on, but black screen.
> Machine two: screen full of C's
> Where do I start to try and repair these machines?
> Thanks
> Robert
>       Message was sent through the cbm-hackers mailing list

       Message was sent through the cbm-hackers mailing list
Received on 2012-05-02 21:00:33

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