[metal_chimiste]

on en avait parlé ici:



http://arcade.emu-france.info/forums/vie...m&start=10



et pour la réponse finale:

Definitely not the battery because a working MVS board still works fine even without battery. It has to do with the ram chips. Check the area around them and the connections with the 68000. Probably both rams are bad and you'll have to replace them.



Or, you could replace your bios with Razoola's unibios that allows to skip the ram tests and boot the system so you'll be able to play the games.