I've been having problems with my barely used Sony STR-DA777es. For some reason, the sound from the FRONT LEFT speaker is louder than the FRONT RIGHT speaker. I've done the following tests and still have not found a solution:

1.) Checked the speaker balance and it's fine
2.) Swapped the front speakers and still have the problem, therefore I concluded that the speakers were not the issue
3.) Swapped the audio input cables from the DVD player to the receiver and the sound is still louder in the left speaker.
4.) Changed the input from DVD to Video 1, 2, & 3 and still receive the problem
5.) Changed the input device from two different DVD players and an X-Box and still have the problem.

I have concluded the receiver is the problem...any ideas!?!?