Help with Non-working NAOMI Cart

[twistedsymphony]

I picked up a DOA2 cart recently.
attempting to boot it throws an Error 01: Game is not Suitable
in test mode it display "Unknown Game" and doing a ROM check every chip comes back with a ? for size with a CRC of 0s, nothing fails or passes because apparently it doesn't know what any of the chips should be.

IC22 is an M27c322 which I pulled and dumped and it checks as a perfect match for DOA2 Millennium in MAME so that's good (looks like an OEM label on this chip too)

I see ZERO hints of physical damage anywhere on the PCB or in any of the connectors so I have to imagine there's a dead IC on this thing.

Does anyone recognize these symptoms and is it fixable?

 

[MetalliC]

afaik usually dies one of 74245 or 74FCT, but there number of them and any may be dead, or few.

looks like an OEM label on this chip too

you mean "DOA2VERM" label instead of common EPR-something ?

 

[twistedsymphony]

you mean "DOA2VERM"

yes, that's exactly what it says.

 

[twistedsymphony]

usually dies one of 74245 or 74FCT, but there number of them and any may be dead, or few.

just looked at the cart and there are 11 of those 74245, I don't see any 74FCT.

all but 3 of the 74245 are on the top of the cart. So I'll see if I can poke around with a logic probe. Thanks for the info!