These cameras are effectively priced to be disposable, parts are nearly impossible to find. What I would do is find a parts camera on a site like eBay with a good LCD and transplant that into your camera.

Cisco doesn't sell parts and replaces the entire camera, so it's likely they just recycle them once they get yours. The problem is the parts cost often exceeds the value of the camera and it doesn't make sense to repair them or stock parts.