bloody hell! that can't help!

what the hell has burnt that connector? the switch matrix is a low current 12v circuit - looks like something bad has happened in the past like a short or something under the playfield.

Cheers
Jacob

That pic is of the GI connectors. I can see that the smaller gauge brown wire has been reconnected from the upper molex(idc) connector to the lower. Will still work as these are parallel. I would change the plug and header pins and reconnect the wire to J120( just to keep it factory)