I've been using COAX output without problems for quite some time to output sound from OpenElec on Raspberry Pi 2, connected to my AVR.
Now suddenly, it stopped producing sound. However, I do get sound if I connect it through TOSLINK.
Possible problems I can think of that could cause it:
1. COAX output is broken
2. COAX Cable is broken
3. Receiver COAX input is broken
4. Some weird software (configuration) error?
Unfortunately, I don't have another cable, another COAX digital source to try on the receiver/cable or another COAX input on the receiver.
Is there anything you can think of that I can try to get closer to find the exact cause and a possible solution?