Chosen Solution

I just bought new av cables for my Genesis I get home and I can’t find my Genesis so I go out to my buddy’s he has a Genesis he sells me well it powers on but no sound or video I also stopped at my local exchange store bought new av cables that connect into back of tv red white yellow plug them in no picture or sound flicker once just a little what’s wrong

May I suggest simply getting a “remake”? https://www.amazon.com/Sega-Genesis-Clas

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.