Well the thing is, since 2 years ago it wont work :noooo: The first faul was it only booting sometimes, then only SCD booted (not cartridge MD), now nothing works. I can do something? Thanks a lot. :shrug:
A better description of the problem would probably help. Does it power up? Does the screen display anything? Have you tried another Genesis with that Sega CD?
Your cartridge slot or your expansion edge connectors could be dirty, damaged, or corroding. Check them. Make sure they are shiney and make a good firm connection. Make sure your cartridge port is clean (probably need a cleaning kit or something) as well as the contacts on all the cartridges you use.