MK2 - UB11 and UB13 failed, game stops

[mawrick]

Any tips on what might cause a mk2 board to stop on error with UB11 and UB13 failed, if this is memory related are these kinds of rams still obtainable new ?.

Also will it normaly stop the rest of diagnostic if this first ram test fails ?

 

[mecha]

Any tips on what might cause a mk2 board to stop on error with UB11 and UB13 failed, if this is memory related are these kinds of rams still obtainable new ?.

Also will it normaly stop the rest of diagnostic if this first ram test fails ?

by design, yes, they stop on the first error they detect. I don't know what a UB11 or UB13 are off hand, but a lot of the major not-74xx-TTL parts on these games are seemingly unobtanium.

like this is the only store I was able to find with what may be what is needed: https://www.pinballspareparts.com.au/electronics/memory/5340-13321-00.html

in other words you'll probably have to scalp ram off dead boards.