If you're setting up a 5.1 channel system, make sure you plugged them into the Surround terminals, and not the surround back terminals. I've highlighted the correct terminals in the image below.
Once you've verified that, make sure you've turned on the surround channels in the receivers speaker setup menu. If that's good, turn on the test tone generator. If you hear the white static noise in the back channels, then they are on and ready to play.
If you're setting up a 5.1 channel system, make sure you plugged them into the Surround terminals, and not the surround back terminals. I've highlighted the correct terminals in the image below.
Once you've verified that, make sure you've turned on the surround channels in the receivers speaker setup menu. If that's good, turn on the test tone generator. If you hear the white static noise in the back channels, then they are on and ready to play.
Post back with your results.