Put a Killer Instinct II Gold cart into a working system and got no video or sound out. Put a working Turok cart in and also got nothing. Put my backup system on and tried the Turok. It worked as expected. Tried the Killer Instinct cart, got nothing and now I have two down systems. I didn't think a cart could kill a console, but apparently it can. I opened the cart and there is no evidence of tampering inside (no obvious shorts, so foul play is out).