Accidentily applied NES AC PSU to RetorN3

[Satoshi_Matrix]

Guys I need some advice.

Today I was moving my consoles to a new shelf, rearranging the cables and power supplies. I made the stupid mistake of plugging my NES AC 9v power supply into my RetorN3 NES/SNES/Genesis famiclone and turned it on for about five seconds before realizing what I had done. Sure enough, it doesn't work now. The RetorN3 uses a 9v center pin positive DC plug.

Is there anything I can do to remedy my mistake? The RetorN3 has a standard 7805 voltage regulator and a series of four fuses, I assume. The system never exploded, popped or started smoking and I've immediately taken it apart.

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.


Here's a battery of pics


http://www.flickr.com/photos/30701966@N04/5486951165/

http://www.flickr.com/photos/30701966@N04/5486912155/

http://www.flickr.com/photos/30701966@N04/5486909655/

http://www.flickr.com/photos/30701966@N04/5486910843/

http://www.flickr.com/photos/30701966@N04/5487513220/

http://www.flickr.com/photos/30701966@N04/5486925655/

http://www.flickr.com/photos/30701966@N04/5487508308/

http://www.flickr.com/photos/30701966@N04/5487510266/

http://www.flickr.com/photos/30701966@N04/5487511690/

http://www.flickr.com/photos/30701966@N04/5486922519/

http://www.flickr.com/photos/30701966@N04/5486920485/


close ups of the components I suspect have gone bad:

http://www.flickr.com/photos/30701966@N04/5486923457/

http://www.flickr.com/photos/30701966@N04/5486924279/

[FABombjoy]

Those look like crystals to me. SMT fuses are usually pretty minuscule.

I was start with plugging in the original power supply and measuring voltage on the input & output pins of the regulator.