06-02-2013, 01:57 PM
I don't think the power adapter is the problem. I seem to recall them as being interchangable when I had both versions. I assume this is the Mega Drive you're using, with the older power cable, and the older versions' power cord, which is the way I always did it. My guess is that it's probably the pins on the cartridges themselves, as these can get very dirty, even if they just sit in storage for years. I would suggest using a similar method to the one you used to clean the console--and then maybe cleaning the console again just for good measure. I can't see anything here that should be going wrong, except of course if your power supply is a bit busted and sending dirty power, but I doubt that's the case.