Get This Party Started!
It could just be that your laser lens is dirty. Wet a q-tip with soft or filtered water and wipe the lens gently. Use a dry q-tip to dry it and see if that fixes your problem.
Getting youyr Gamecube repaired by Nintendo is $50.00 minimum. And I don't think that includes shipping. Check the Nintendo website. Or take it to a game shop where they fix game systems. The'll evaluate and fix it for you for about 40 to 45 bucks. Save yourself the hassle of trying to fix it yourself.
Thanks Geek. By the way, are you really a Geek
If you're still having problems after cleaning lens and disk, take it or send it to a repair shop.
How Cheap?