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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