Macintosh TV with no ADB

[d3jsp]

Got a Macintosh TV with no ADB inputs from either keyboard or mouse. Fuse F3 is fine and known good keyboard is getting 5V. Caps locks work slowly but all other locks just lights up and goes out instantly. Wondering if it's a break from the cuda chip.

Does anyone have schematics for the Macintosh TV or similar LC boards?

 

[d3jsp]

Seems like adb goes to pin 20 on the cuda just fine, what else could be broken further down