As mentioned in a previous post, I have a Racal 9903 counter timer that I'm
trying to repair; I found a manual that, unfortunately, has a vital section
of the schematic missing due to a bad scan, but I have determined that the
LSI device IC5 is probably at fault. The IC in question is, of course, a
custom part, a Ferranti manufactured 22-4601. Anyone have any idea where I
might get one? Not holding out much hope as it's a 30 year old device, but
you never know.
Martin
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