Question about Denon AVR-2809CI

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Output relay faulty

Right channel stopped working, will work again after switching mute a few times. Next time it will not come on again. I tried using speaker B outputs, but there the Left channel has the same behaviour.

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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techman
  • 3130 Answers

SOURCE: No Power

I mwas gonna suggest that you need the speakers attached but you stated later that it did the same thing with the speakers attached. The unit switching off after it checks its self is NOT a normal thing. TAKE IT BACK BEFORE ITS TOO LATE!! GOOD lUCK

Posted on Jun 18, 2006

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tech48
  • 624 Answers

SOURCE: Denon AVR-3802 Front Left and Centre channel not working right

I work at an authorized Denon service center and have repaired lots of Denon receivers including this model. So bare with me, and trust that I really do know what I am talking about.

The first thing you need to do is find out if those two speakers may be at fault. You can do it very easy by disconnecting them and connect two of the known good speakers into the channels that the bad sound is coming from and then connect the suspected bad speakers in where those good speakers were connected to.

If the same speakers still sound bad, you know that you have a couple of bad speakers. I think that it is likely that the speakers are OK, but it is a good idea to make sure.

If the sound from the suspected bad channels is now still bad with the two good speakers, you have an internal amplifier problem or you have a problem on the digital board.

For your sake, I hope it is the amplifier that is giving you this problem, if it is, that can be fixed by a good audio technician.

If the problem is the digital board, you may be in for some real headaches. Not that many audio techs are very good at troubleshooting a digital board, its not their fault, it is just a very difficult job.

In either case, it will need to be looked at by a qualified technician.

I hesitate to tell you this, but the problem sounds like a digital board problem. In some rare cases, a technician with excellent soldering skills can reflow a couple if the memory IC's on the digital board and restore proper operation. If the technician is top notch and isolates the problem to a specific IC on the digital board, they can replace that IC and you are good to go.
But in most cases, the technician will not even bother trying to troubleshoot the digital board because it can take hours of troubleshooting, and just order the board if it is available. Most of them are available from Denon, but they are very expensive. Normally the part alone is $200 to $300 and I have seen many times where it takes months to get it.

You can also send it directly to Denon's factory service center and that will get your unit back much quicker. They have direct access to the boards, where-as the authorized service center must order it thru one of the Denon parts distributors and they do not always have them in stock. so you end up waiting for a long time.

If you need to send it to the Denon factory service, let me know and I will email you a return authorization form, this must be faxed or emialed to Denon with the proper information and then they will fax or email it back to you with the RA number which must be written on the outside of the box before shipping it to them.

I hope that this information wasn't to overwhelming, but if you found it helpful a good rating would really be appreciated. It helps to keep the experts on FixYa motivated and willing to answer the questions people have even it the answer is not very good news.
I received an "inappropriate" rating from somebody who just wasn't happy with the truth, and most people never even bother to rate our answers. But that's another whole subject.

let me know if you need more help.

Posted on Jun 22, 2008

  • 1 Answer

SOURCE: Denon DRA-25/25L Stereo Receiver.

Without looking at the schematics for this particular model, I'd surmise that the click is indeed a speaker protection relay. Generally this is fed by a number of different sense circuits that watch for power amp issues and/or excess speaker current and/or power supply output stability. Although the relays do indeed fail at times, generally it is not the relay that is at fault. If you have a scope and a schematic, you can check the various circuits that feed the relay for the exact cause. If not, you can do some experiments that might help deduce the problem: e.g. do headphones work when speakers do not, does the relay click on when no speakers are connected (or selected), etc. In my experience, it is most often the output transistor(s) in the power amp. But not always ;-)

Posted on Oct 15, 2008

  • 1 Answer

SOURCE: Analog output from digital input for Denon AVR 3803

On the Denon AVR-888 (and I presume others), you have to put the unit in "record" mode. This is covered under "Other Operations and Functions" in the manual. Here are the steps:
1. On the front of the unit, press the zone2/rec select button
2. Turn source select until "recout source" is displayed
3. Turn source select to choose the input source

Hope this helps.
Matt

Posted on Apr 29, 2009

  • 3 Answers

SOURCE: denon avr-2500 left main speakers very quiet.

The Denon 2500 was one of the best ProLogic receivers built, it was a work horse and very little ever went wrong with them.
To make sure you're only supposed to hear right & left speakers, press the Stereo button on the remote. Also recheck your speaker connections - this is the single most overlooked connection problem folks have.
Check the balance control to make sure it's in the center position

Make sure the Tape Monitor is not engaged.

Then, check to make sure that the Pre-Out, Main-In jumpers are connected properly on the rear panel.
If that is not the problem, try pressing the Tone Direct button on the remote (aka Tone Defeat on the front panel).

Posted on Oct 22, 2009

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NAD 3130 one channel stopped working, tip what to do first?


May not be serious,first with good channel playing move all controls and switches on the amp,Dead spots can occur on controls especially if they are rarely used.balance controls,tape monitor switches etc so work them all.If fault doesn't clear try headphones,switched sockets can cause problems.next swap input signal leads,left to right. and if still no good try swapping over speakers left to right.STILL no sound? its the amp.Time for tools and a test meter.You can look for blown fuses but its never a good idea to replace a blown fuse without testing the circuit first.may cause further damage and put up the repair cost

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I have a Sony STR-K502P home receiver. While watching a program the other day the center channel stopped working. Prior to that I had recently noticed a clicking noise like a relay switching off and...


It wouldn't be your output transistors. If they go bad they blow the fuse. Sounds like a speaker relay problem. Have you checked the solder connections on the relays? They sometimes break down. If that doesn't help, I would replace the relay. Center channel goes through RY501. Sony p/n: 1-755-170-11.

Apr 21, 2013 | Audio Players & Recorders

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I have a Pioneer VSX-305 receiver. I blew channel A speaker outputs by allowing speaker wires to touch while the output was on. Everything else works, including the B speaker outputs. There are only three...


There are independent relays for the speaker A and B switching.Best place to start would be from the relay. When you select A do you hear a click, if not relay is not switching. The circuit involved is a small transistor , a low value resistor ( could be the culprit ) and a shunt diode.

Aug 16, 2011 | Pioneer VSX-305 Receiver

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No sound


There can be any number of reasons for this problem - solve it diagnostically by starting with something that you know is working and work through systematically to the other end.
  1. Test a microphone on a separate amp to make sure it works okay. Check amp and speakers working. Check that all output cables from mixer to amp are working by testing separately.
  2. Plug microphone into a channel on mixer. Also plug in headphones and turn headphone volume control up.
  3. Make sure input sensitivity knob is turned up a bit (say half way) and main output faders (yellow) are up.
  4. Check that channel is turned on (little button just above the channel fader- needs to be pressed down)
  5. press pfl (pre-fade listen) button (next to button to switch channel on)- do you get any sound on main output or headphones or any indicator lights on mixer to show signal is getting that far (eitehr the individual channel metering lights or the main ones in the central section)?
  6. turn off pfl - make sure channel fader (slider) is up - normal position is ) - about 3/4 of way up. Check lights again on individual channel and main output section - any signs?
  7. Is the sub mix button for the channel pressed down - in which case you will need to bring sub mix (red) output faders up as well as main faders.
  8. If you have got signs of signal on the individual channel but not main see if the channel has been routed somewhere odd (like a subgroup of channels).
  9. Plug a working amp and speakers into one of the auxiliary outputs and use the relevant auxiliary send knob (on each channel just above the faders and pfl switches) to pan some signal to that auxiliary out - do you get anything? There is also a headphone socket for listening to the auxiliary channels (with a selector switch /knob to determine which one - make sure it is in the right position) try listening to the auxiliary output with headphones - anything? If yes the problem lies in the main output section.
  10. Check that there is not a jack plug in the insert socket (to route signal through an external effects unit) without a matching return jack being plugged in - if appropriate is relevant effects unit switched on and correctly set up - if unsure remove the insert plug to take it out of the system.
  11. Make sure any mute buttons are not switched in on main outputs.
You can download a full user manual here http://www.allen-heath.com/gl/gl2400

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1 Answer

Carver pm1400 quits working on right channel from time to time.


suggest you look for dry joints around the faulty channel

Feb 08, 2010 | Carver PM950 Amplifier

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Nad C320 right channel stops working then comes back again


This sounds like the "pre-amp" section is cutting out or there is some interruption in the signal path. A few things to try:

1) With the unit off, try "working" the volume,balance and tone controls. This means, turn them up and down a number of times to clear any debris that may be in the controls themselves.

2) Work the input selector switch the same way if it is a rotary switch.

3) Try turning on/off the tape monitor switch a few times.

4) Keep track of whether this problem is sensitive to heat. Does teh channel shut down more quickly once the unit has been on for a while?

Lastly, if you can solder, look for any solder joint that appears grainy or has rings and resolder it.

Update this with your results and we'll continue on...

Thanks,
Dan

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Dead right channel


Might be an output relay with a bad contact. If you have an oscilliscope you will see sound before but not after the relay. Try wiggling and pushing on/off all the tape monitor buttons and any mode switches. If you have a pre-out/ main-in switch then try switching that several times (with the unit off) then try it. Good luck.

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All speakers and lines OK?  Sorry for basic approach!!  Protection is supposed to work when speaker outputs are loaded under recommended Z. speaker Z is a setting too ... along with several other paramenters.  Also, re the "last return" ...  Maybe the back surround speakers were turned off in settings?  Again, apologies if you've tried all this basic stuff.  I've just bought one of these amps and have probs with the FM tuner not tuning anything.  Mmmm. Back to the shop??   Cheers, Chris

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If the board is not cracked , check voltages at the audio output relays. on the input audio terminals side of the relays ,if you have voltage you may Have bad output Ic's

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Works great after this solution with the cables.

Thanks

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