Originally I had no trouble with this, but for this whole past year, without touching anything, suddenly my ZP90 is only able to send an extremely faint signal to my receiver that it's hooked up to, on the 2nd zone of my receiver.
Basically I have the ZP90 allowing music to play through my receiver on the main zone, and it sounds just fine. The receiver supports "Zone B" which is for a pair of speakers in another room in the home. This used to work fine, but now, I crank up the volume of Sonos to the max as well as the receiver's, and u can hear the music, but it's extremely low volume and u have to put your ears up to the speaker to hear it. I tried setting it to fixed vs non-fixed volume, to no avail.
I know the issue is NOT with the receiver, because if I play a different source to this "Zone B" it plays nice and loud as expected (for example, FM radio, or a CD player). So the issue is with the ZP90. I tried to use fiber optic cable to connect to the receiver, and then tried analog stereo wires, to no avail. Same results. Again, this was not an issue originally. It cannot be my wire because as stated I tried 2 different ways.
Can the unit go bad from heat or something to affect this? I am stumped.