Maybe the MOV across the mains or the filter - both inside the metal box where the mains switch is - they would be my first things to change
+ 1
I'll bet the mains fuse on the game is over rated. Is this a recent purchase ?
+2, More than likely the line filter. These often do short out and trip safety switches/circuit breakers. I've replaced a few over the years, and i've seen a few machines that have had the line filter disconnected and/or removed.
I fitted a new line filter but it still trips the switch. I'm going to order a thermistor which may fix the issue.
