Greetings from Las Vegas,
Since I cant upload the pictures I have due to size, here is a google drive link with the photos of the board
https://drive.google.com/drive/folders/1AW3H_2BgzL3ZTeoXvVs4XNxxN1Pnp7_m?usp=sharingFrom the research I looked into, its not a 3902 board? So we used a chipkey 40. Reset all the 3 options, confirm. Reinstall gamechip, boot up with data errors. Get through all of those and get to the main game screen, but with errors on the screen that cant be cleared (hopper). The one we need to fix, is the hopper as this machine doesnt have one. There isnt a chipkey menu that I can find, just the standard operator menu that you can change denominations and other settings, but nothing to actually turn the hopper off. Its 'greyed' on, so you can turn it off.
I tried the 22? chip and it froze when it started to apply its settings. So were kind of stuck.
This is my father GameKing slant machine, so any helpful information would be appreciated.