I have the same problem with a Stern Simpsons.
Every time I turn it on tells me to go to diagnostics/check switch's, and ends up being all switch's,
but playing game they all work and test ok?
Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside