Hi Lord

Perhaps the power supply has started to fail. Mine failed in December the original symptoms included popping sound in all speakers I also lost sound on all channels. A reset temporarily fixed it until the supply completely died.

Regards

Phil..

Lyngdorf MP-40, ROON Sever,598DP, Emotiva Gen 3 9 CH amp Musical Fidelity M8500S, Tannoy Definition DC10T and matching centre, Monitor Audio Gold FX surrounds, Velodyne DD15 sub, Sony KD75Z9, Toshiba EP35/Sony UHD X700, Townshend Isolda EDCT interconnects, speaker cable, Musicworks Reflex plus G3 ext block, Q4-ref isolation rack.