I found to this be the more or less official forum. I have a small problem with my RX V3900 and hope you can try to help. right from the beginning (I owe him since 2010) the following happens:
once I start it, and everything is ok, the display show mode, he identifies as RX V3900 and I can listen to the music.
a few days later I start him, and the only shows the word ..mainboard.. and he switches off. the I need to disconnect him from mains for a second, and he works normally.
A few days later, he only shows ... mainboard... and switches off, etc etc. this is annoying
did someone else had this bug, and maybe can help ?