I found what I think is an nes multicart at a used bookstore a little while ago and have been unsuccessful in making the thing work. I would really like to play it, but all it does when I load it up is cause my NES to blink. It's not a system based problem cause both the nes' in my room usually boot up games with no problem at all. So, is there something else I need to do for it to work? I remember having a multicart on my first nes years ago, and I believe my dad soldered some kind of wire into it, but I'm not sure why he did that, it was years ago. So anyone got any tips? I tried cleaning it, but I'm not sure on the best method to clean an nes cart.

Here's some pictures....the box doesn't really seem to match up with the cart but that's what it was in....it's about the size of a GBA box.