Hi everyone, I'm working on saving this Space Riders I just bought - as well as it being my first pin. I have a decent understanding due to working on some cabinets, such as Battlezone, Stargate and my Neo Geo, but I am a little stuck even with the help of some friends. Note on the pin:

Johns Jukes had serviced the MPU and Auxillary in Sept 2020 (Not by me, unsure everything they changed, or what was changed prior to them.

I'd also like to add that some servicing had clearly not been from Johns Jukes (See D4), so some prior repairs can be put into question.

Since then, I have done the following with a friend:
PRIOR to these changes, the game was watchdogging, with the displays showing garbage and only the back half of lights ever turning on.

Burned new 2532 ROMs (doubled the image)
Replaced D4 (It was a fujitsu, and a small splash of solder bridged pin 1 and 2)

With this, the game no longer watchdogs, and a few more lights sometimes turn on. Oh, and at least 8 of the solenoids immediately activate, so I've unplugged that connector.

Continuing on, this is what we stopped at:
6800 ~HALT is toggling but BA stays low
E10 Pin4 stuck low (R/~W B)

Replaced both, with no change.

Replaced RAM, no change.

Any guidance would be lovely, I don't have access to making a test rom for a few weeks.

I can add any videos if needed in the morning, or gather more information.

Honestly? I have no idea. The previous story I was told was that it sat in a barn for 20 years, and didn't run (the rust backed this up at the time). Now that I've seen they've worked on the boards.... it's confusing.

Pins here in Vancouver are god awful prices usually (my opinion) and my parents would rather play a pin over battlezone, so I went with a somewhat average priced Space Riders.

EDIT: John's Jukes ONLY serviced the Auxillary and MPU boards as they were shipped to his shop. However, stuff like new(er) Littelfuse holders and okay shape rubbers were on the machine, which leads to some... unanswerable questions.

Update: after replacing 6 chips, RAM, and ROM, I've now got it to boot to attract, but it's missing some functionalities still. Should be able to save this atari after all.