Unfortunately the Service Manual for the WASP does not contain the exact
IC type. But there exist buffered and unbuffered versions: CD4069BE is
the buffered CD4069UB or CD4069UBE is the unbuffered one. Maybe the
original circuit requires the unbuffered ones, whil you usually will get
the buffered ICs if you order a CD4096 at the usual shops.


Am 15.04.2014 11:16, schrieb steve mantz:

>
>
> I'd be interested to find out what the issue is myself here. Mine
> (bought s/h) has exactly the same issue. Did post about this ages ago
> but haven't been using the modular much.
> My Wasp was working fine, had it out of the case for a while and on
> putting it back in got exactly those symptoms. I've tried swapping the
> CD4069, the CA3080 and even the 5532 with no change at all. Examining
> the board shows no obvious shorts / damage / solder bridges or dry joints.
>
> Steve