Center speaker will not work

If you had the Speakers Set to A (not B) and no headphones connected when you pressed the TEST TONE button on the Onkyo HT-R540 (also known as the HTS-790) remote, and you had no sound from the Center Speaker then try the following steps.

1) Check the Center Speaker wiring at both ends under a bright light and make sure that there is not a strand of wire touching the Receiver Chassis or another speaker post. Check both + and - .

If that looks okay,

2) unscrew the Center Speaker Post connections on the Receiver and verify that the bare stripped wire is making contact. Often, the insulation is too far into the connector. When screwed down, the wire's insulation is crushed and keeps the bare wire from making contact.

If this looks okay and the unit is under Warranty, your last test is to:

3) temporarily swap the wires from the Center Speaker with the Right Front Speaker. Turn the volume down low and try the TEST TONE button again.

If you now hear sound from the Center Speaker box itself and none from the Right Speaker box, then the Receiver is the problem.

If you still do not hear sound from the Center Speaker box, then the Center speaker itself is defective.