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Denon 2106 Protect Mode (Update)

I didn't check "fixya" as I had paid for the premium service and I was afraid that would indicate the job was complete and terminate our discussions. I think your responses are excellant and what I was looking for. I read that you had experience with Denon and wanted to direct my initial inquiry to you Tech 48. However, the system directed me to a guy in England who tried to help but was not getting to the level I needed. I assume when we pay for premium service that the responder gets some sort of compensation albeit probably not what is deserved. I think the web site is great but wish it had a better way to manuver between responders in the premium service area or I 'm confused. In any case any further notation will be "fixya" for our sessions. Your responses have been top notch. BTY still in Texas? We're up in snowy Colorado.

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Yes, I am in Texas, just moved there from Michigan. Got away from the cold just in time. It's beautiful in Colorado, but just too cold for me.

I had no idea you had paid for a premium service. You contacted me thru the free forum. If you would like for me to get the payment for the premium service, you could contact fixya thru this email ( ) and tell her (Lauren) how you did not get the information you needed from the premium question you asked and would like that credit to go to me. She will know what to do about it. I really don't know how you would go about it. As it stands right now, you will end up paying whoever answered you first unless you gave somebody a FixYa! rating and accepted the solution. Unless you request a refund. Which is what you may need to do. I hate to see some other person get paid for my knowledge. This has happened to me on many occasions. I get contacted thru the free forum to solve a problem they have paid somebody else for. I don't spend a whole lot of time on the site, since almost everything I do on this site is free help.

In the premium questions you should not give anyone anything but a "Thanks for Trying" unless you are satisfied you have received the help you have paid for. I never seen a link to the premium question you paid for, so I never got a chance to answer you there. I am sure that some of the answers you were getting there were very amusing, to say the least. As I told you in my last post, I really am an expert in these receivers and I don't believe there is another expert here with the experience actually repairing them as I have. There is a decent bunch of folks working here, but many are not really the experts they claim to be. It can be a pretty frustrating activity using the premium service because there are so many so called "Experts" that are only in this for the money and try to answer questions they know nothing about. I hope it was not as bad for you as I have seen in many other cases.


Dave (tech48)

Posted on Dec 03, 2008


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Jan 25, 2011 | Denon Audio Players & Recorders

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My AVR-2106 receiver will only stay on for a few seconds before clicking off. We have disconnected all components and speakers from unit to eliminate short circuit/wire problems and still with only power...

Hi amy, Your vivid description of the problem confirms that the protect circuit is cutting off the amp on detection of a high current drain. The possible fault is the failure of the Audio Power Output Mosfets. You will need to remove the mother board to test the stage and confirm to replace one of the stages.
The second possibility is that the protect circuit by itselff could be defective and cause a faulty bias to trigger the cut off. This must be checked by a stage by stage Voltage check.
Since the removal of the mother board requires some experience so as not to tamper the set , you must decide on the course of action.
The other option I can suggest is to call up the Denon call centre and check up the nearrest service centre, send and receive the set to them by courier after confirming the fault and estimated costs. If this justifies then it must be thought of.
I am sure you can search for one as I am not sure the place of your residence... try a search on the web for Denon service support with your location/city.
I hope my advice helps but please open the cover to have a look inside for visible damages.
Good day

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Normally when this happens it is because the impedence load is too small. This unit requires 8 Ohm speakers. If you connect 4 Ohm speakers, it will work, but work harder and generate excessive heat. If the heat is too much, the unit will enter protect mode and shut down. Once it cools off, it will work again. In your case, if the speakers are the correct impedence, check for crossed wires. If that is the problem, running the unit at higher volume levels should cause it to shutdown sooner.

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My Denon AVR 2106 gives sound out periodically in all modes

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Jan 01, 2009 | Denon AVR-2106 Receiver

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Denon 2106 Protect Mode (Close Out)

I am glad that changing those voltage regulators in the power supply of the main board has fixed your problem. As I told you in earlier posts, when you unplug a connector it can give you erroneous voltage readings that can send you looking in the wrong places, and it can be dangerous.

I really appreciate the compliment as well, it makes this work very rewarding.

Thanks again, and feel free to contact me with any future problems you may have with any audio equipment.


Dec 12, 2008 | Audio Players & Recorders

1 Answer

Denon AVR 2106 Protect Mode (followup)

Your information you need will follow this next paragraph. I just wanted to explain a little about myslef and the site to you first.

Since my information was just what you were looking for, a rating of "FixYa!" would have really been appreciated. A "Helpful" rating is good for some experts here, but it drags my overall rating down. I am sure you did not realize that when you rated my other post. A FixYa! rating is not just for getting a unit fixed, it is also appropriate when you get all the information that would be reasonable to get for your problem. It is rare that any expert here can actually solve a problem that requires some expert troubleshooting skills without ever having the unit in front of them to troubleshoot. So if you have received the best help possible, it is wrothy of a FixYa! rating. Most people who come here for help have no idea how to replace parts, they usuall want a quick fix that requires the pressing of a couple of buttons. 99% of the experts here could never figure out how to fix one of these Denon receivers. I don't want to toot my ownn horn, but I know these receivers as well as Denon knows them. I have been a audio technician for over 18 years and much of that time I have worked at an authorized Denon service center. So I know how to fix these better than most technicians anywhere. Just because I have so many years of experience working on Denons. I am doing this work at FixYa! for free, I don't get paid one red cent for helping you with this very expensive receiver. Don't get me wrong, I am not complaining, I am just reconsidering offering any more help here at this site. The only reward I get for the help I give people for free is a rating, and most people who get the very best information from me don't seem to realise that "Helpful" is really not that good. I guess you could say I feel a little under-appreciated. Well, enouph of my whinning, lets get to your problem.

From the voltage reading of the regulators I believe that the regulators are both shorted. They should only have 15 volts on each, one negative and one positive.

You could use generic regulators, but they usually have a metal tab on the regulator that would need to be insulated against the heat sinks. The original regulators do not have the metal tab, so no insulator is needed. They are in a TO220 package, just like many transistors. If you use a generic, you must also insulate the screw that holds it against the heat sink. If you do not know how to do these things, please just get the originals.

Here is the part numbers

IC101 Denon part number = 9630219408
IC101 generic part number= AN7815
IC102 Denon part number= 9630219505
IC102 generic part number= AN7915

I hope this gets you back up and running again. I think it will. If you have more problems let me know.

You can get those parts from this website, it is who we use at our shop.

Dec 03, 2008 | Audio Players & Recorders

1 Answer


There should be a volume adjust on the center channel. This is done by the remote exclusively. You may also wish to compress the sound using the dynamic range compression button or so labeled.

Aug 31, 2007 | Denon AVR-2106 Receiver

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