Bose surround system certain speakers not working ONLY when watching TV


Jun 23, 2016

I have a Bose 5.1 surround system connected to a Bose amplifier which is connected to a Philips tv. It is used for directing all sound in the house including radio. It worked perfect for a couple years and now all of the sudden 3 speakers don't work ONLY when watching TV. When watching trough HDMI or listening to FM radio everything works. But turn on the Digital TV and a message comes up for 2 seconds saying "Switching to audio system failed". Then the two back speakers and front speaker turn off. I tried everything. All cables are connected and the settings are normal. I have no idea anymore. Can someone help me?