I received a few boards today (Hyper Olympic, Circus Charlie and Xevious), not sure if they have glitches or are completely dead, hopefully will find out on Saturday! I don't think any are original boards, they all look like bootlegs to me as they don't seem to have any manufacturers names on them, but anyway they all have the appropriate daughter boards & ribbon connectors. The Xevious is actually a 3 board stack and has some kind of extender for the edge connector wired on to it, hopefully that will be a useful donor board if the original doesn't work.
Arcadeuk's video's are great, but he is a bit of a whizz repairer... good resource though.