Question about Denon AVR-689 Receiver
Posted by Anonymous on
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Posted on Jan 02, 2017
It sounds like there is a problem with the differential circuit. The bias I am not sure about, as every unit is different. You should get the service manual to be sure or call Denon and see if they can give you an idea. Good Luck
Posted on Jun 05, 2007
My AVR 5600 has worked flawlessly for nearly 9 years!
Suddenly, when trying to play music (DVD or CD) through my LS32's (JBLPro), once I achieve higher volume, the receiver cuts off.... Using a Symetrex mixer, NO OVERLOAD light on the Denon, it simply cuts off!
Re-cut all the wire connectors... TV movies (5.1) work great at normal listening volumes.... but tonight, when cranking up music, the receiver simply cut off. Blinking light...
Posted on Jul 26, 2008
SOURCE: Denon AVR-1508
If your amp looks like it's going to work as normal (ie the front display lights up as it should etc), but then the amp goes into protection mode when the anti-thud circuit times out, then I know what's likely to be wrong.
It's one of the power amplifier channels which has gone faulty.
I just found this out after having this problem with my AVR-1906.
I took the amp apart and de-soldered the suspected channel power transistors (centre channel in my case).....and hey-presto! it fired up as normal (obviously the centre channel would be out of service).
I have ordered the replacement transistors from Farnell (UK) at a miserly cost of around £2-£3 each.
Just waiting for them to arrive.
An alternative is, if you don't use all your channels, take the transistors from a known working but not needed channel and swap them over with the duff ones.
Hope thats of use!
Posted on Aug 16, 2008
If your Time Warner Cable box is old enough that it has a DVI output it may have HDCP (copy protection issues) with the receiver. If you are having to use a DVI to HDMI adapter to connect to your receiver (output from Cable Box to input on Receiver) then it's very likely your cable box may have may not output the signal because it detects the HDMI repeater in the receiver.
The two best options to correct this are:
1. Connect the DVI to HDMI cable directly to the input on the TV, you lose the convenience of the video switching in the TV, but it will solve the problem. Then connect the digital audio output from your cable box to the receiver, although you've probably already done this.
2. Contact your cable provider and check into the possibility of them swapping out your cable box for a newer model that would have an HDMI output. This would be the best option since the HDMI output on the cable box would give you both the Digital Audio and Video through a single HDMI cable.
Let me know how it works out for your, or if you have any questions.
Matt @ OneCall
Posted on Feb 28, 2009
I had the same problem. The system from the factory does not ship confgured for continuous subwoofer output. To fix this, do the following:
1. Enter the system menu.
2. Go to "Speaker Setup"
3. Select "Bass Setting"
4. Change the setting from "LFE" to "LFE+Main"
That should do it... You can also see this information in the "Bass Settings" section of the product manual on page 26.
Posted on May 04, 2010
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