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"Pealing down" refers to the plastic outer cover. As the capacitor starts to bulge, the plastic (which normally laps over the top of the cap) slides down. This happens just before the cap either relieves through the bottom or turns into a mini-rocket and shoots to the top of the cabinet.I forgot to answer back. here is a peeling cap. I would surmise it's from excess heat exposure. which of course will result in it drying out.
View attachment 810059
also these original 10 uf 160V caps almost always leak on G07s
View attachment 810060
Modern caps have score lines in the top to prevent them from blowing off the board. The top just splits and relieves the pressure.
I was experimenting in the mid 1970's with a Radio Shack kit. I was installing different components in a neon lamp circuit. I put 120 volts to the circuit when I had an underrated capacitor installed.
I heard "REEEEEEEEEEEEEE - BANG" and had that cap top hit the ceiling in my bedroom.
Fortunately, my parents weren't home to hear THAT.
I'd suggest a fiberglass pen cleaning of the edge connectors regardless of whether the connector is burned or not. The edge connectors are tin coated, which corrodes slightly resistive. This drops the voltage to the board, and makes the game twitchy or inoperative.



