Impulse full moon fever gremlin

[TheKid]

Hi everyone my dad recently died and I've inherited his man cave, said cave has a impulse full moon fever fruit machine which until this morning worked fine. It's lights up like always but then an alarm used to sound now it just gets stuck with the lights flashing as if it's trying to start up. I've checked all the Faq which say check the boards, power etc but still can't seem to get it past this point. Any help would be greatly appreciated.