[Linnovice]

Hi all, I’m now very confused.
I’ve tried a board out of a PR99 and all works ok. I’ve got a spare TCB (I’d forgotten I had it previously) and put that in and I still have a problem. If I turn the machine on with no tape all is well. If I turn it on with tape loaded it immediately goes into play and runs. If I stop it all is well again and it works normally.
I’ve checked the caps C16 and C17, both are in spec. I’ve changed the IC4 and it made no difference. Now I’m stuffed. Can anyone suggest what the problem is?
The fault is there only when turning on with tape loaded and after then pressing stop all reverts to normal. Everything else is good and within spec.
Help!
Mike