In October my NAS disk broke down after the powerfailure. So I bought new disks. Last month (not even a week ago) my Windows system disk (SSD) died (unrecoverable). So I bought a new disk. Today my receiver gave in. No more sound. Everything works, except there is no sound. Factory reset (my receiver has that) didn’t work. So I’m guessing the pre-amp inside died, since it has 7 discrete amplifiers for each channel, so the problem must lie before it reaches these amplifiers.