Call around and ask if anybody will be willing to desolder the old one and put a new one in. That's presumably all it takes. You'll need to get a new voltage regulator but if you can find somebody you can solder, they might also know where to order a new one.
Actually - while I wouldn't second guess Satoshi here, I would say that the system should probably have a number of components checked with a multimeter. Again, somebody with soldering equipment and skills will surely have one of these, and should be able to find datasheets for many of the components for testing.
Otherwise, there are probably some hobbyists who will take the system in the mail, do the work, and ship it back to you.
But yeah, the first thing you need to do is take a picture so people can see what exactly went in.
It's a good reminder to me to find and label my systems and wall warts - I've got a few different types floating around here myself (the one that came with my A/V Famicom doesn't have the Nintendo molded case we are familiar with, but has a shiny label and might not even be branded Nintendo).





 
 
					
					
					
						
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