Antwort auf „Genesis will turn on screen flickers but no sound or video”Did you try reinserting the cartridge and powering back up? My Genesis II is very finicky with cartridge insertion, just like our older Intellivision console which is where I learned about this trick. Just keep trying to reinsert the cartridge and do it FIRMLY, but not so much you break something. I have a feeling I need to recondition the pin connectors on the console itself. The process seems easy but I am so fearful of ruining the console. Others have claimed that it fixed their problems with game power up on the first try.