Pffft...this is an antique. It's all part of the appeal. :!:
I bet the dust is vintage
Maybe the console was bathed in the dust of crushed Magicards...
That would be cool...and while you're at it, take the Nes case and make a toaster or mailbox out of it...
I can't do that in my area...sadly because of the giant community mailbox and someone will prolly steal it...
Replacing the pin connector is the best option, but before you attach the new connector, be sure to see if the contacts on the motherboard are not too corroded...