Evening from the down under,
***That's rough bud. That's gonna require a healthy set of soldering skills to fix. Would you mind if you can tell me what that ribbon cable would normally do?***
If you can find the part I'd say replace it and try not to replace the board as I personally would love to fix a computer like this. Let me know how it goes or of any updates on the situation
Cheers,
Nick P from The Down Under