I recently bought a used Gamecube (DOL-001) from ebay. I got it cleaned and set up and everything works alright except for a single issue I have with the video: there are fuzzy static lines running horizontally across my screen even while playing and even when the console is turned off (but still plugged in).At first, I tried a different cable but that didn't fix it. I tried a different TV, that didn't fix it. I even called Nintendo and they told me that this problem had never come up before in the history of all Gamecubes. Has anyone else have this problem? Is the system reaching the end of its life? Can it be repaired? Oh, and in case you are wondering, I use an unoffical AC adapter, but official cables. I can provide pictures if necessary

I think the AC adaptor has harmed the Gamecube.
I say: use always official products.
Also, some pics are handy

I'll do you one better by posting both pictures and video of the console in action. PS: What do you mean by harmed? Can I fix that with a simple AC swap?

No, with harmed i mean broken.
like a little bit more volt.
also, wich video cable you use?

I use an official cable and yes, I tried a different cable but it didn't help

Okay, are the pictures and video I said I would get to you earlier:

http://www.youtube.com/watch?v=WS4q7NXpEPY&feature=youtu.be

looks like that psu is generating a nasty power ripple. try it with a Nintendo PSU if at all possible. Im pretty sure that will "fix" it.

Okay, I'll locate an official AC adapter and see if that fixes it. Thanks for the tip!