Let's try it in TECH:
I have the following problem with a Flipper Football:
Got an eprom error (U26) on display, game doesn't start anymore.
I changed the CPU Board from my other FF and it worked well again.
Now i got a spare CPU Board and when i turn the machine on, it showed the message "inproper driver board".
I did exchange the driver board as well, but still same message.
Any ideas?
Another story is, that on CPU board there is no U26. It ends with U25....