elfyhead
The error message is interesting. It is indicating that the sound board RAM has failed.
I've repaired several preDCS sound boards like yours that had failed RAM, but I've never seen this message.
I can take care of the board.
If you'd like to ship the board, the following link contains the instructions and shipping from to include in the shipping box.
http://www.ChrisHiblerPinball.com/Contact
My PinSide feedback page:
https://pinside.com/pinball/community/pinsiders/chrishibler/feedback
Happy to help.
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Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
https://www.youtube.com/c/ChrisHiblerPinball - My YT Channel
http://www.PinWiki.com - The Place to go for Pinball Repair Info