Q: i cant get my camera to work it says its on but has no feedback, any ideas?

Here are my best suggestions for your camera problem:

• If Apple's http://support.apple.com/kb/HT2090

   suggestions do not help you, (the "reset" suggested there

   often restores normal function,) continue with the following.

• Use your Mac's Disk Utility to repair permissions and then

   download and apply the latest Combo Update for your Mac OS.

   If you are using OS X 10.7 or later, reinstall OS X.

• Repair permissions again immediately following the system restart

   that completes the Combo update or reinstall.

Properly applying the Combo version of updates can sometimes correct software problems, but, if your trouble is caused by a hardware problem, there are no user serviceable parts of the camera.  For hardware help, contact Apple or an Apple-Authorized Service Provider for service.

(Over time, Apple has changed the built-in camera's name on newer Macs from "iSight" to "FaceTime" and then to "FaceTime HD."  Regardless of the name of your Mac's built-in camera, the same info and troubleshooting applies.)

   Unless you have a current backup, make one now.

  Then use the final "Troubleshooting" suggestion:

"... contact Apple or an Apple-Authorized Service Provider for service."