Denon AVR-X1500H Firmware Corruption

Confirm this symptom if the unit enters protection mode (flashing red LED) immediately upon startup, even when all external input and speaker cables are disconnected. This suggests a potential internal software state error rather than a physical load issue.


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ID: iCZRzgSMx4PL413XwWJK
Created: 10/1/2026, 5:19:10 PM
Version: 1.0
Status: Not Verified
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