Denon AVC-x6800 pre-amp problems, any suggestions?

[peng]

I had to reset it twice. Also I changed the RCA cable but I guess that's not the reason why it's doing what it's supposed to do. Played music in stereo and fed it all kind of content from Blu-Ray (Atmos) as well as Netflix streaming etc.

I never knew why, but I have read about forum claims by some users that they had to do multiple times before clearing their issues. Not really sure if that's just internet hearsay though, if yours are in fact fixed, say not returning for days, then such claims may be 100% valid, but if so, it may be worth for D+M to saying something about it on their website.

In my thinking, I think multiple times might work if for some reasons the microprocessor failed to clear certain things that caused the issue(s) the first time. The good thing about a truly factory reset, aka "restore" is that it would clear everything, and even re-install the latest firmware.

 

[KenMasters]

I never knew why, but I have read about forum claims by some users that they had to do multiple times before clearing their issues. Not really sure if that's just internet hearsay though, if yours are in fact fixed, say not returning for days, then such claims may be 100% valid, but if so, it may be worth for D+M to saying something about it on their website.

In my thinking, I think multiple times might work if for some reasons the microprocessor failed to clear certain things that caused the issue(s) the first time. The good thing about a truly factory reset, aka "restore" is that it would clear everything, and even re-install the latest firmware.

He didn't clear the microprocessor, he just reset the AVR to default settings.

I don't think there's anything wrong with D+M's implementation, but perhaps the nomenclature is unclear:

Factory Reset - Simple reset to default settings
Factory Restore - Clears microprocessor then reinstalls firmware

 

[peng]

He didn't clear the microprocessor, he just reset the AVR to default settings.

I don't think there's anything wrong with D+M's implementation, but perhaps the nomenclature is unclear:

Factory Reset - Simple reset to default settings
Factory Restore - Clears microprocessor then reinstalls firmware

I know he did not do the "restore", my point is, people who said they had to do multiple reset, likely did the reset, but not the restore.
So, I am saying that perhaps our OP had to do it twice, because he did not do the "restore". Note: As mentioned earlier, I am still not sure if such claim was due to hearsay.

As far as nomenclature, I agreed D+M is unclear about them, anyone who try to search for factory reset, restore or something similar would know. If I remember right, the older models used the term microprocessor reset, reinitiate, or something like that, was a little clearer than using the term reset, or even restore.

To me, if one simply looks at what they said below, one may not know clear enough to do what they need to do the first time. Experience users obviously would have better chance picking the right option. Again, in the long past, it was clearer, when it clearly say resetting processor, instead of just resetting to factory setting, default settings etc., they introduce further confusion when they start using the term "factory restore" for the higher end models such as the X6800H but continue to use the term "Resetting factory settings" on the lower models such as the X3800H. Who so many different terms? Why not just something like "Reset to factory default settings", including re-initializing microprocessor (if they thought that would make things clearer) or "Reset to factory default conditions"? Other reset such as reset network settings, configurations etc. could remain as those are inherently more specific about what gets reset, whereas factory default generally mean like it was in the sealed box.

When do I reset the microprocessor?
Although you'll rarely need to "initialize the microprocessor" under normal operating conditions, there are a few cases the microprocessor may temporarily freeze or lock up. When this happens, simply follow the guidelines in your owner's manual to "reboot" the microprocessor and restore normal operation.

If you experience some unusual behavior -- a channel that's suddenly silent, "forgotten" level adjustments, some eccentricities in your unit, this could be a sign you may need to reset the microprocessor. Of course, you should check all connections carefully first. If you've eliminated connection and setup errors as a source of potential problems, you may need to go through the initialization process.

The procedure will be listed as "Initialization of the Microprocessor", "Resetting the Microprocessor" or "Factory Reset" as each unit has its own individual protocol for reset. The reset procedure is usually listed towards the rear section of the owner's manual or may be in the AVR's GUI (menu) if you have a newer model, but you will see exactly what page this procedure can be found on by looking at the Table of Contents in the front section of the manual.

There are several issues that can cause a unit to improperly work or freeze up, such as a jolt of static electricity or an electrical surge through an input. When you do initialize the microprocessor, please remember that this erases any saved settings you may have previously programmed into the unit. As a tip, if you write down your preferred settings BEFORE you reset your unit's microprocessor, you'll have an even easier task of setting up the unit after the reset occurs. With Networked models, you can use the Web (Browser) Control feature to back up your settings by saving a configuration file on your hard drive. This feature is also listed in your owner's manual. For this feature, we recommend using Internet Explorer as the browser.

On newer models, you can use the Save/Load GUI (menu) option to save your settings. This is found in the GUI under General - Save/Load. This method also saves your Audyssey calibration(s). You would save your configuration using a compatible USB drive.

 

[Brambo67]

Still going, no issues and is playing all content the way it should that I throw at it. So unless it happens again ánd I decide to restore as opposed to reset, I will post again. For now thanks for all the good suggestions and shared thoughts.

 

[Brambo67]

Short update; still working great after the two resets. No restore needed so far. Enjoy my setup every day, even upmixing from 2-channels to Dolby Surround brings great bonus to watching series via multiple streaming services. Stereo listening also great with no more drops in dB's on right channel. Probably not high end but so are my ears.

 

[Raj21p]

Hey,

From what you’ve described, this looks like a hardware issue in the 6800’s front right pre-out stage. You’ve already ruled out speakers, cables, and your MM7025, and it happens even without Dirac.

Try a full factory reset and test in Pure Direct/stereo mode. If it still dips, it’s likely a preamp or DSP board fault I’d contact Denon for warranty repair. Intermittent channel drops like this rarely fix themselves.

 

[Brambo67]

Hey,

From what you’ve described, this looks like a hardware issue in the 6800’s front right pre-out stage. You’ve already ruled out speakers, cables, and your MM7025, and it happens even without Dirac.

Try a full factory reset and test in Pure Direct/stereo mode. If it still dips, it’s likely a preamp or DSP board fault I’d contact Denon for warranty repair. Intermittent channel drops like this rarely fix themselves.

Thanks for the resonse. However the problem has disapeared after two times reset (as described in my previous post) I feel confident it's fine now.

 

[Brambo67]

And still going strong; haven't had any more problems since the double reset. I feel confident the resets did the job. Currently waiting for a Black Friday price drop on Dirac ART. If that happens I will do the calibrating from scratch again and see what then happens.