Oh, noes...

I reseated the PIAs and ROMs on the MPU.

Reflowed the header pins on the MPU board and on the solenoid driver board and reseated the connectors.  Feflowed a couple of IC sockets while I was there.

Now I only get 1 flash on the MPU.

: (

Pulling boards out and rechecking work.

Thanks for your help so far guys.
Matt.

PS. I'm pretty sure the expander is good and I replaced that globe last week.  But I'll check it all again once I get the machine booting again.