Denon AVR-687 - Answered Questions & Fixed issues

Need to check on the power supply to the output drivers, if there is no response on the speakers it is possible that the output replay is under protection. You need to remove power plug and leave aside for an hour before the amplifier is plugged back. If all functions show on display but there is no sound check the PREAMP output- audio out. If there is audio then the fault is with a non switching of the power amp or a power amp protection. Since these are mounted boards with little access to testing you need to be skilled to go further to probe and proceed. Also Denon might refuse to service if the amp is tampered which also can be expensive.

Connect the Subwoofer Trigger Output for each subwoofer to thecorresponding trigger input on its amplifier. This enables the subwoofer toturn on or off together with the HK 3490. To further conserve energy,when the trigger connection is made, turn the Subwoofer Link Switch onto turn the subwoofer off when the corresponding pair of main speakersare not being used, such as during muting, when headphones are beingused, or when the main speakers are turned off using the Speaker 1/2 switch

Well, you didn't offer a whole lote of info, so I imagine that is why responses have been slow. It isn't clear at all to me what the symptom is, but perhaps it is a PiP issue, either hardware based, or a setting accessed through menus.What is the video source? For example a Dish Network HDDVR will most likely have a pip function, which splits the screen. Not knowing what is being split, or how it is very difficult to say.

check your connections again and ensure you have the audio going out. With many tv's you need to change a setting in the menu, double check that as well.

First find out if your Dish HD box has an optical or coaxial digital audio out.
Connect this digital out to to the Denon's optical or coaxial input. On the back of the receiver the digital inputs are labeled as DVD or CD/CBL . Remember to select the front input selector of the Receiver according to what ever input you have connected your HD box.
On all TV channels your 5.1 speakers may not work. You can make them work by choosing some of the DSP functions on the Denon remote. Just press the surround button and select Dolby Pro Logic II movies / music. This will convert 2 channel audio to 5.1.

the finals are burnt out.
the output transistor are blown out because they have probably been locked up in a cabinet and have not received enough air.
or if it is fairly new check your speaker connections

Hi,

your receiver is having a power problem. One or more component(s) on the power board of your receiver is defective, that's why its turning off.

This problem may have occurred as a result of power surge or excess power entering into the unit or irregular power supply.

If you know about electronic repairs, get a meter, use a screwdriver to open the receiver so that you can gain access to the power board. Use the meter to read the power board and replace any bad component detected.

Once this is done, your receiver will stay on and function normally again.

Good luck.

Check the main power switch next to the large power button. It is a small push button. If it is pressed in and you still have no light around the power button then very likely you have a dead power supply.

may be break part insied microphone jack...

There should be a switch that you could set to the various voltages. Normally a round switch in one of the corners on the rear panel that you can turn with a flat screwdriver

Check your settings. You can set the initial turn on volume to any level. Go thru the "on screen" main menu. hope this helps

under the system setup menu go to video setup, and re assign the devices, then make sure the video output is assiggned to component as well. That should give you what you need

The Denon DRA-697CI stereo receiver typically uses a 250V, 2.5A fuse. However, it's always a good idea to consult the user manual or check the label near the power input on the device itself to confirm the exact fuse size and specifications for your particular model. Using the correct fuse size is important for safety and to prevent damage to the receiver. If you're unsure, you can also contact Denon customer support for assistance.

The Denon DRA-697CI is a stereo receiver. Typically, the fuse size for electronic devices like stereo receivers is listed in the device's manual or on a label near the power input. It's important to use the correct fuse size to ensure proper protection against electrical faults. Without specific information about the fuse size for the Denon DRA-697CI, I recommend consulting the device's manual or contacting Denon's customer support for accurate information. Using the wrong fuse size can potentially damage the device or pose a safety hazard, so it's crucial to verify the correct specifications.

Check and clean the dampening piston(s) associated with the raise / lower mechanism. The silicon oil may have dried up or leaked out.

More than likely the mosfets are shorted in the output stage.

https://instrumentalparts.com/denon-dnd9000-traverse-unit-w-laser-sled-disc-motors/ I think they are now obsolete but the laser assembly and motor, (the only parts that fail) are still available.

Question edited for a lot more clarity and add maker. Question moved from Cars and Trucks category.

Denon AVR Panel lock function

Denon https://support.denon.com > answers > detail > a_id Yes. All our newer AVRs have a procedure to lock out the front panel to keep accidental button presses from occurring. This is a push button procedure and ...

Canceling the Panel lock function AVR-S640H

Denon https://manuals.denon.com > SEHFSYojjpdajr Canceling the Panel lock function · Press Power Button while you press and hold TUNER PRESET CH + and TUNE + with the unit in standby mode. · Press TUNE + or TUNE ... People also ask How do you unlock the panel on a Denon receiver?"); display: inline-block; height: 24px; width: 24px;"> How do I reset my Denon AVR 1509?"); display: inline-block; height: 24px; width: 24px;"> How do I turn off the panel lock on my Denon AVR s540bt?"); display: inline-block; height: 24px; width: 24px;"> Feedback

Panel lock function NR1509

Marantz https://manuals.marantz.com > SEHFSYeumlhqks Panel lock function ... To prevent accidental operation of this unit, you can disable operation of the buttons on the front panel. Open Front Key Lock N59. Basic. ..

See troubleshooting section of user manual on page 54. Bed_AVR-1708.pdf (denon.com)

The best thing would be to check all the connections, and if everything is in order and tight and still not working properly, then you'll need to notify Denon customer support for further assistance