MODCOMP II Revisited...

[Chuck Guzis]

On 10 Jul 2007 at 12:04, Lyle Bickley wrote:

>> So armed with a logic analyzer and scope, I began to debug the 
MODCOMP - one 
> chip at a time. After finding 20 or 30 bugs - ALL of which were TI chips - I 
> finally "relented".
> 
> I have now replaced about one hundred and fifty TI chips in the Modcomp's CPU 
> and memory planes. I'm about 3/4 of the way through the process - and the 
> MODCOMP is becoming very reliable. It will run basic memory diagnostics by 
> the hour without failure.

Why not simply re-tin the pins on the TI chips?  Shouldn't be too bad 
if you've got a solder pot.

Just wondering...

Cheers,
Chuck