hm...looking over the boards, I see something I'm assuming are fuses that I am assuming are the problem. They're boxy horizontal cylinders. On the NES daughterboard there is one is labeled SJC21477B. It looks fine. On the Genesis/SNES board there's another labeled RJH143181A. Looking it over, it looks like it received the damage as it's slightly rusty looking compared to the others. The same is true for another one on the SNES board labeled F01214772A. This one looks the worst of the two. There's also another one labeled RJH24576A on the Genesis/SNES board, but it looks fine.

So the bad ones look like they're

RJH143181A
F01214772A <- this chip looks to be pretty bad. If anyone has a RetorN3 (I have a 1.0) please open it up and confirm I got the lettering right. It's very hard to make it out. Thanks.

What are these parts I need to replace?