Why does my Denon AVR-X520BT receiver turn on and then suddenly shut itself off?
If your Denon AVR-X520BT turns on and then suddenly cuts off (shuts down), it is most likely because the internal protection circuit has been…
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Denon AVR-X520BT — questions & answers
Read setup, compatibility and troubleshooting questions about Denon AVR-X520BT.