Quoted from Loganpinball:A new set of roms fixed the issue. It seems the first set I bought are no good as the replacements work fine.
When it wasn’t working at all were you getting the startup “bong” sound at least?
I am having a similar error with my sound board. I’ve reseated and even replaced the ribbon cables and verified AC/DC voltages to the board. I don’t even get the bong sound.
I have another board en route to my house in addition to a pinsound+ (we’ll see which gets here first).