Right, so my bro bought a guitar hero guitar along time ago sometime after we go rockband. My brother played it to hard and now the strummer is broke on it I think. Whenever it goes to the menu screen of whatever I'm trying to play, it spazes out flys up and down the screen without me touching it.

The buttons seem to work just fine, but is there anyway I can fix this?

Could it be from a spring or something inside the guitar that I could easily fix?

I'm trying to save money...