Why won't it turn on?

I found my old gamecube and wanted to play it. It turned on and was working well but I just didn't set it up to my TV so I couldn't play it and shut the gamecube off temporarily. When I figured out the correct set up to my TV, I tried turning on the gamecube again to test out the set up and now it won't turn on. Any ideas? I already cleaned out the dust out of the fan. Will I have to take it apart?