So i found this keyboard in old factory. I know it is in insanely dramatic condition but pcb looks fine. So im gonna try to restore it.
The biggest problem is with cable. Somebody cut it off. And side that plugs into pcb have 6 pin conector and uses 5 cables. I personaly never seen something like that so im looking for help. What does that fifth cable do? It's some terminal reset line or something? And if i can just plug that cable that you can see on the left.