I need help , naomi 1 stuck in loading

[Arcade-Projects]

hi all, I have a naomi 1 board which ram test show everything ok, but when I plug a cart (in this case virtua tennis 1), board stucks in Loading Virtua Tennis (31k).

I have tested 2 carts with the same result. This board was very dirty but now its cleaned. I dont see any corrosion, bad traces or something similar. Fan spins well so I dont know what is the problem with this board.

I have tested too a multibios, no change.

If anyone can help me...

Many thanks in advance.

Source: https://www.arcade-projects.com/threads ... ing.28756/