I have a hardbody here that I'm trying to get playing. When I picked it up, there was no backglass or displays. Put new displays into it to see what it would do and it starts up and goes into attract just fine. It also credits up without any issues. The problems come when you start a game. It starts just fine and kicks a ball over but then goes into a loop with the heavy breathing and eventually flashes check FU-1 or field fuse.

I check all the fuses and changed the ones that were wrong to the correct fuses. Everything seems to look good but it just will not fully start a game without looping. Not really sure where to go from here. Any help would be greatly appreciated!

I'll have to double check the connectors. Everything looks extremely clean but you know. Thanks!