I would say to anyone who's console randomly stops working- please, please look up a teardown on YouTube, open it up, & poke it guts! Even if you're not really good with electronics, even if you can't solder, as long as you trust yourself to not pull on anything hard enough to break it, IT'S WORTH DOING!
My SNES quit on me. It was working fine a few months before, but suddenly black screen. I opened it, looked at parts, cleaned things randomly... and then it just worked again. I put it back together & it's been fine since (save for a slightly spongy eject button because I might not have that spring in quite right- but I don't want to break the spring, so it's fine.)
My Intellivision did not like my HDTV when I got it- every couple of seconds the screen would spaz out & it made games unplayable. I opened it up & found the RF shield (?) is soldered into place over the board, & I'd have to literally break it out to get all the way in. So I just put what I could get out back in. It works now- I don't even know what I did, but the picture is stable (if fuzzy) so I can use it again.
Old consoles are weird like that, sometimes all they need is a good jostle to get them going again. And if it doesn't work, you're in the same boat you were before you opened your dead machine. There's really no good reason not to give it a go!