Purchased Denon stereo receiver 6 weeks ago. The remote (Denon RC-1048) worked flawlessly until tonight. Now the red light blinks when I push any button , but it only seems to work to power on and off the unit. The volume control no longer works , and it will not change the input mode from DVD / TV / AM/FM , etc ...
I pulled out the batteries for a few minutes thinking I may have messed up the settings somehow , or pushed a button that messed it up by accident , but it didn't work.
My suggestion would be to not ask this site for advise. In my opinion, this is the worst site for actually addressing any problems involving any electronic device. It is easier to just call Denon support and ask them how to fix the problem. Your remote probably just needs to be reset, and they will tell you exactly how to do it. Better still you'll actually be able to talk to a live person that is familiar with your product. These guys that run this website are really only interested in the fact that you might click on an advertisement, that's why there is so many of them on the page. I have never once received any advise from this site that has actually been correct. These guys have actually made the problem worse. I had to reset my entire Toshiba remote because of the advise I received from this site. That meant pressing and holding each individual button on the remote for 2 secs each just to get it back to the original problem. Never ask the so called experts on this site anything because they are self proclaimed experts and are probably not familiar with your device even though they claim to be. This website should be shut down for misrepresentation. It only pops up first on search engines because they pay to have it be that way. If you absolutely cannot find the information your looking for and calling the service and support center for your device doesn't work, I suggest just returning the product to where you bought it or buying a new one before trying any advice on this website.
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The speakers are not connected properly.
Check the speaker connections.
The Mute function is activated.
Turn off the Mute function.
The volume is turned all the way down.
Turn up the volume.
Neither set of speakers is selected (if unit has A/B buttons to select sets of speakers).
Press either A or B to select a set of speakers.
Both sets of speakers are selected, but only one set is connected (if unit has A/B buttons to select sets of speakers).
Press the appropriate button to deselect the speaker outputs which are not connected.
The receiver is set to TAPE MONITOR (if applicable).
Turn off TAPE MONITOR mode.
Headphones are plugged into the main unit.
Unplug the headphones.
The source selector is set to the wrong source.
Select the proper source.
The impedance of the speakers is less than the rating for the system.
Use speakers with the correct impedance rating.
It is possible that when it fell that the connectors on the infrared might broke loose therefore not sending a signal to your receiver. Easy way to check that when you press buttons on your remote does the red light come on or not? If not then take remote apart and re-solder connection. If the light comes on try resetting your remote code to the receiver that you have. You can find a list of remote codes in your user manual or online at (http://www.usa.denon.com/ProductSupportAndArchives.asp) just find the model number of your receiver and get the .pdf file from them.
These remotes are known to be weak, Denon is aware of the problem, here in the Netherlands they've sold out. Spare part no longer available. Try an older remote to an Denon AVR. these will work for say, 98% and are more reliable.