Recently, I have come across a problem; my megadrives tend not to start up first time. I place a game in, turn it on and I am greeted with a blank black screen. Reinserting the cart a number of times will get the game to work, eventually.
This is a disturbing problem for me. It isn't the system itself as I have used another megadrive and it does the same thing. It isn't even the power pack as I have another of them that I have used, again it hasn't made it any better. It also isn't a particular game, as various games have started to do this. I am at a loss to think what could be causing this.