Hello, I'm not an expert in electronics but I do like to learn what I can.
I have a world cup pinball that worked fine, unfortunately now I have a problem with the sound.
When turning on the game I get no bong, I sometimes get sound error or sound interface error.
After around five minutes of the game being on I suddenly get a bong and the sound is all back ok like it needs to warm up!
I've swapped my demolition man sound board to world cup and the sound kicks in straight away so I guess that rules out cables and power to the board.
Up to now I've checked the solder joints where the ribbon cable is located, also a general look around for anything that looks obviously blown but to no avail.
I'm guessing it might be a bad capacitor as it starts working after a few minutes, can't really test a cap with a multimeter though.
I did notice two of the big diodes were giving different readings to the fully working demolition man board.
Has anyone any clues how to go further?