I have an IGT Gameking and all of a sudden I'm getting a Door Open B to where the machine is looking for this to be corrected before it plays. I have a pair of jumped wires at the belly door that are green w/blue stripe and white w/blue strip. If I remove the jumper, I get Door Open BM (belly and main) Replace the jumper and it goes back to the original Door Open B
If I open the main door switch I get the same results of Door Open BM.
It appears that the belly door jumper and the main door switch are both reading as Main Door and nothing will clear the belly door error.
I'm thinking the motherboard is the issue.
Any suggestions?