Question about Denon AVR-3806 Receiver
Trying to set-up a new Denon 3806 Receiver. Only making it through the inital 3 steps before hitting a few snags. Keep getting an error message that the system isn't recognizing one or the other front speakers and the rear speakers. We've completely shut everything down, unplugged everything, then re-setup all the speakers only to start the set-up again to find that the other front speaker isn't being recognized yet -- the other front speaker is working now!! We are pulling our hair out -- any help would be appreciated!! Thanks.
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Posted on Jan 02, 2017
I am assuming you have tried new speakers on used unit on both A & B choices. Have you tried your new speakers with old 2802? If they work OK with old unit, you have problem with amplifier in used unit. Take the used 2802 to a reputable shop and have it thoroughly tested. Perhaps it is just a loose connection.
Posted on Apr 02, 2007
Needs to be reset or fuse blown. Take to repair shop, cover has to be taken off and fuse replaced. You could fix it yourself but the warranty won't be honored. Do it yourself electronic shop should have a replacement fuse, may have to be soldered in place. Repair shop, should cost around $30.00 to $45.00 to fix, price of fuse $4.00 to $6.00. Your choice.
Posted on Mar 27, 2008
SOURCE: Shutdown protection? HELP please
All of the Denon recievers I have repaired (over 100) that shut down after a very short time are going into protect mode. The display lights up and after about 10 seconds the display goes out and the standby led blinks red.
I have found that they have one of 3 possible problems and they all require that the reciever be taken apart and fixed at component level. No way to tell what your problem is until it gets put on a bench and troubleshot.
Problem 1. This is the most common problem. One of the front channels shorts out. On the big heat sink the front channels are at each end. It is the front left channel (close to the display) This requires that the output transistors be replaced as well as some driver transistors and some resistors and a capacitor. Lots of work for a blown channel. Denon has put out a bullitin to upgrade the bias transistor and change a couple of resistors to help compensate for this failure. That channel overheats more than any other channel.
Problem 2. There is a resistor that is right next to the preamp board that opens up. It is a 10 ohm 1 watt resistor and when it opens, it causes the unit to go into protect.
Problem 3. The +12 volt regulator fails. It is in the power supply area on a smal heat sink right next to the -12 volt regulator. Generic part number is KIA7812 It also causes the unit to go into protect.
Most decent repair shops can fix these from about $120 up to about $200. Depending on which problem it is and how fast they are at finding the problem. Most charge labor by the hour.
Posted on Jun 18, 2008
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