Recently purchased a denon avr-x3500h. Every once in awhile it will just cut completely off, stay off for maybe a second and cut back on. No warning, no lights, nothing. Its hooked to my pc via hdmi and in a well ventilated area. Any ideas? Thanks in advance.
Are you sure the receiver itself is powering down and back up again or could it be that the signal is dropping out? If so then try using a different HDMI cable between pboth the receiver and the source as well as between the receiver and the TV.
If it were actually power down or losing power then it would power back up in standby and not return to the state it had previously been in.