Hello I have a problem with my Multi-mega Black screen (no cd or cart inserted) LCD says "GAME" no mods bios or jumper. On CART inserted black screen after this: the original supplies is connected. where is the problem? thanks.
If the BIOS screen is coming up, there can't be very much wrong. Most likely it's just a poor connection between the system and the cartridge. There might be some slight buildup or corrosion on the cartridge connector which is causing a bad connection to one or more of the address/data lines. Just give the cartridge you're using a good clean (I'd suggest some methylated spirits on a cotton bud), and wriggle it around a bit in the system. You should be able to get it to boot with a little bit of work.
thanks for your reply,it's possible the cartridge corrosion don't boot mega cd bios with nothing inserted?
Good luck with that. I had a similar problem (search for my thread). i tryed so many things without any result.