Hello, I have done some reading but wanted advice on getting rid of the background audio hum on my Firepower whenever it is powered on. I have owned the game for 25 years and it has always hummed somewhat, however it is noticeable and annoying now that I have hooked up to an external hi-fi audio system. Some advice has recommended replacing capacitors on the sound board, while others suggest removing extraneous ground wires on the sound board?
Also, can anyone confirm if the slingshot bumpers on Firepower are supposed to generate sound effects when activated? I recently switched out to Rottendog MPU/Driver combo board, and I feel like I used to have sounds with the sling shot bumpers but now there are none. All other sounds seem fine across the game.