Question about Denon AVR-2803 Receiver

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My AVR 2803 shuts down when volume is at medium or above.

Is this a fuse issue? When playing a DVD or CD the entire system will shut down when the volume is medium or higher. This just bagan to happen. Up to now I have enjoyed superb performance. If it's fuse is it something I can replace?

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Too big a speaker load,unit sensors shut unit down when speaker impedance gets too low . and draws too much current at hi volume.A bad woofer or tweeter voice coil burned by sudden excess volume can cause this,also partially shorted speaker wires.

Posted on Jan 03, 2009

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Jan 21, 2008 | Denon AVR-2803 Receiver

1 Answer

Sound cuts out above medium volume


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

Jeff

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You may want to try putting an attenuater in the line with the RCA's to cut the input signal back just a little bit. So you are not driving the amp so hard with your preamp.

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