Question about Denon AVR-2803 Receiver
It cuts out when volume is turned up past a medium level. Everything else works except that. Help!
This is usually a heat problem. The more volume you ask of an amplifier, the greater the current (electrical) draw, the more current draw the more heat is generated. This is true of ALL electrical/electronic items.
As you describe it, the fuse is not blowing (stays on) so my choice would be a chip heating up and then shutting down. If that's the case (99% probabilty). The only other reason would be if the unit has an overload switch inside, it would react this way. Either way it's still a heat problem and truthfully nothing you can do.
Try this first though:
Is the Denon dusty inside? Dust can create 2 problems-heat and static electricity. Look through any vents you can get at. If the area around the unit is dusty chances are it is dusty inside. The best way to get the dust out is using a can of compressed air unless of course your vacum cleaner has a "blow" port.
In my shop, when heat is supected I use a can of freon th cool down chips, etc to isolate the component. This is not for a "layman" and strongly suggest bringing it into a shop.
One more question. If the unit using a knob for volume-do you hear a scrating noise when you hit the no volume zone? What happens if you go past the point quickly? I ask because sometimes there can be a bad spot on the volume. The volume knob is basically a circular resistor, whether digital or analog so this is a vague possibility (the other 1%).
If you e-mail me the serial number I can check with the Denon engineering department to see if there are any design problems as it may be a covered repair. It never hurts to ask.
Sorry to be the bearer of bad news
Posted on Jan 23, 2008
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