Alright. The fact that they sound when making the test tone but not otherwise, I would think it is a setting that needs to be made on the reciever. Do you have a model number on that aswell? If you have a DVD player you can try to play a film that says that is has a DTS 5.1 track on it, as I am unsure wether devices like a Firestick or Chromecast even support 5.1 sound. You can give a shot at looking through the menu of the reciever (if it has one) to make sure all of the speakers are set as active. Sometimes they are not, so make sure they are.