I read the technical notes and read the voltage in the indicated spot.

The main central board is receiving 5.042 volts and the board with the digital outputs is reading 4.980 volts.

Initially the main was reading near 4.98 v and the other was reading near 4.890 volts, so I increased the PSU output a little.

Even after this small adjustment, nothing has changed.

It seems that the processor are not sending a signal to “start/open” the digital output connection.

Is there a relay that “opens” the sound output? I ask because I can hear it when I turn on the Zone 2 output and also when I try to perform a Room Calibration. No other situation made the processor click the relay. When I hear the relay clicking it is like the speakers and the processor are “handshaking”, after that it starts to display PCM 96k or MHR 48k.

Best Regards,

Jorge