Used Axe Guitar.  Spring in whammy bar brolen.  Whammy bar works.  Rubber band trick should fix problem.

Gene Simmons Axe Wireless Guitar Controller for PlayStation 2 and PlayStation 3
This fully equipped, axe-shaped guitar controller is a replica of the Gene Simmons's signature bass guitar. The AXE controller is personally certified by the Rock God himself, Gene Simmons, to give you that Rock Star experience. The wireless AXE guitar controller is a three-quarter-sized replica of the original Gene Simmons AXE guitar and larger than the standard video game guitar controllers. Customized with a replicated paint finish of the original guitar, the Axe guitar controller features Gene Simmons autograph and his photo in make-up painted onto the body of the controller.

Requires 3 AAA batteries (not included)

• Compatible with all Rock Band and Guitar Hero games
• First ever officially licensed replica, 3/4 size of original Gene Simmons Axe® Guitar
• Touch sensitive fret buttons
• 2.4 GHZ of wireless power with a 30ft range
• Uni-body design with high quality surface accents
• Fortified components for added control and durability
• 40+ Hours of battery life (from 3 AA batteries, not included)