World Class Bowling (Video of issue included)

[Fallen_Veteran]

So, the previous owner of the arcade machine told me the game recently shut off and back on at their home while playing. Said the machine had been working flawlessly but he had noticed the CP was loose while playing and he suspected a bad connection somewhere in the cab. I thought this would be something I could diagnose and get working again. I got the game home, it powers up and and the screen just rolls and rolls with the same message but won't proceed past this point. I'm not sure where to begin! Any help is appreciated!