I finally got some time today to take a crack at repairing an Astrocade that belonged to my step dad. I was hoping to get some more historical data on the unit. I think he bought it in the late 70's.
It has a sticker on the board with HV-A25782_. Is that the serial number?
The PCB silk screen includes the number MM T1 A084-90701-B620 A080-90701-B620 and is labelled MIDWAY MFG. CO. A BALLY COMPANY.
The date codes on the IC's are between 1977 and 1978.
Here's a pic: