Tony,
I would not be bothering the group if a had a repair manual..
The machine works again : the rightmost slot contained another, unconnected,
char gen board !
The 4014 works ok with that board.
I can only assume the previous owner was already experiencing this kind of
problems.
I removed the old char gen board as I would still like to repair it. I assume
the DAC's you talk about are
actually build out of discrete resistors, driven by a 7416 ?
Another tek4014 question : what is the functionality of the rocker switches
marked 1, 2 and 3 ?
Thanks, Jos