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3 Answers

We have a Denon AVR 4306 Surround Sound Receiver connected to a Motorola HDMI dual tuner DCT 6416 PVR. We're using component video cables to relay the video signal and RCA cables for the audio signal. We have an HDMI connection between the receiver and flatscreen plasma TV. This setup was working fine until a short power disruption today. We lost picture and sound. We reset the video output to HDMI and got picture. So now we've got video input but no audio input. Any idea what we should do??? Jean Peckett

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  • 8 more comments 
  • jpeckett Jun 22, 2008

    We did the checks, refreshed the devices but still no sound.

  • jpeckett Jun 22, 2008

    I don't know how to check if it's set as Analog. We went into Setup, then Audio Input Screen, then Digital in Assign. TV is set as OPT1. Is this correct?

    We also tried removing the component video cables and RCA audio cables and connected an HDMI cable between the Motorola HD PVR box and the HDMI2 connection on the Denon Surround Sound Receiver. (HDMI1 connection is being used for the input connection from a DVD player). Again, we had video input but no sound. In the System Setup, video setup was showing as HDMI. TV was showing HDMI2. Audio Input Setup, Digital in Assign, TV was showing as HDMI2.

  • jpeckett Jun 22, 2008

    Problem is with the Denon surround sound receiver not the TV. If we connect the Motorola PVR box to the TV using a HDMI cable then we get both picture and sound.

  • jpeckett Jun 22, 2008

    To Tech 48



    Dave,



    We have a DVD player connected to the Denon Receiver using a HDMI cable into the HDMI1 input. When we changed input from the TV to DVD, we had picture and sound!!



    We also have a coaxial cable connection from the Shaw cable feed to the coaxial connection on the Denon Receiver. Using the tuner function on the Denon, we were able to tune into various radio programs. However several months ago we lost audio output when we tried to use the tuner. We've given up on using the tuner.



    Thanks

    Jean

  • jpeckett Jun 23, 2008

    It looks like we'll have to take the Denon Receiver in for repairs.



    Tech48 - did you have anything to add????

  • jpeckett Jun 23, 2008

    To Tech48



    Hi Dave,

    Good to hear back from you. We'll leave it until tomorrow and have another go at it with a clear head and manual in hand. Thanks for all the suggestions. You'll be the first to know if they work.

    Jean.

  • jpeckett Jun 23, 2008

    To Tech48



    Hello Dave,

    Thanks for the research you've done. We'll try this a little later today and let you know how it goes. The puzzle is that we had it all hooked up OK and working before the power outage yesterday. We'll redo everything and see if the Denon works.



    Cheers, Jean.

  • jpeckett Jun 24, 2008

    To Tech48



    Dave,



    We have connected the Motorola HD PVR box to the Denon with an HDMI cable via the HDMI1 input. We connected the Denon to the TV using an HDMI cable taking the feed from the Denon via the HDMI Monitor Out. We connected the DVD player to the Denon using an HDMI cable via the HDMI2 Input Terminal. We also went into System Setup menu, Audio Input Setup, Digital in Assign and assigned the TV HDMI1 and the DVD HDMI2. In the Video Setup, HDMI in Assign, we assigned the TV HDMI1 and the DVD HDMI2. We continue to have the same problem. When we use the TV function, we have a cable TV picture but no sound. When we switch to the DVD we have both picture and full surround sound.



    We tried to initialize the microprocessor the way you suggested and held the buttons down continuously for over two minutes. The display never started flashing and the settings didn't change. How long should this take? How should we be switching the Denon off and on, via the remote or using the buttons on the Denon receiver?



    As noted previously, when we connect the Motorola box directly to the TV using an HDMI cable, we get both picture on the TV and sound from the TV speakers. This suggests that there is no problem with the audio and video signal outputs from the Motorola box.



    Cheers,

    Jean

  • jpeckett Jun 24, 2008

    To Tech48



    Hi Dave,

    We tried HDMI3 and still have the problem. We also tried the initialization procedure again as you suggested with no luck. We'll take the Denon in for repairs as it was working OK with the exception of audio output from the tuner function and now it has no audio output from the tuner funtion and the TV function.



    Thanks for trying to help!!

    Jean.

  • jpeckett Jun 25, 2008

    To Tech 48



    Hi Dave,

    We were really happy with the expertise you brought to the problem we have. However, I can't find a way of ranking your help from the thread. It isn't obvious how to do this.

    Any advice?

    Jean

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  • 2,071 Answers

If you do already all the setting and refreshed the devise and checked all the cables and nothing happens ..this trouble is in the power amplifier section , ,audio IC there is defected or loose or cold solder of the joint, you better reheat the cold solder or change that audio IC.find a repairman to do repair for you,,This not cause too much,that IC cost only 6dollars..

Posted on Jun 22, 2008

  • LORETO LACARON
    LORETO LACARON Jun 23, 2008

    The problem is your Dennon receiver,, try this so we can pinpoint out the problem..put the speakers close to the receiver ,what you will do now is to power up the receiver while listening to the speakers with the volume off.In about 3 to 5 seconds you should hear a slight click from the speakers try this both speakers,if you hear then circuit is ok.try to checked output for the speakers,;if there is high amount of DC at the speakers ouputs . the speakers will be destroyed. If you have a digital multimeter,measure the DC-should be about to 50millivolts or less..leave the set on for about 3 minutes for the circuits to stabilize before measuring,.then if you get overrange on the meter measure voltage then speaker will destroyed. then if the speakers are good and still no sound then the problem is in power amplifier section there is an IC maybe defected or cold solder of the joint ,if seems your receiver needs to the solder the tuner section and power amp. section.you better to do this so your receiver wil work better again..

  • LORETO LACARON
    LORETO LACARON Jun 25, 2008

    Just click FIXYA for tech48 below to his last comment ,its override the the thanks for trying color yellow it change to blue for fixya ,,just click ..


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  • Master
  • 624 Answers

I work at an authorized Denon service center, the only one in Michigan. So I see alot of these receivers, I have probably fixed over 100 of them.

I hope you will bare with me and respond to my requests for information, because it is likely that this problem can not be solved with just one answer on a forum.

you say you reset the video output to HDMI and have the picture. Now no audio , but you do have video.

First thiing to check would be that the source you are using on the Denon has been set to use the HDMI. You were using analog audio and it could be that your source on the Denon is still on analog.
Let me know if this helps, I have access to the service manual and can be much more help.

thanks,
Dave

Posted on Jun 22, 2008

  • 11 more comments 
  • Dave DeGain
    Dave DeGain Jun 22, 2008

    Is there any sound at all from other inputs? If not, you are not going to like the answer I give you. But first I need to know if the tuner or cd or aux input have sound.

    I think I know what is wrong, if you have no sound on any of the other sources, I will tell you. Otherwise I would rather figure out something else for you.


  • Dave DeGain
    Dave DeGain Jun 22, 2008

    OPT1 is not correct, that is the fiber optic cable input. There is still hope for you on this.

    The HDMI has audio and video combined. That is what must be selected for TV.

    You did not mention if you have audio from any other sources like the tuner or cd. this is a very important question. It will let me know if your digital board has a problem. All of the audio runs thru the digital board, even the analog audio must pass thru it.


  • Dave DeGain
    Dave DeGain Jun 23, 2008

    This is a problem with selection of audio devices.

    You have sound with the DVD on HDMI, that is very good news.
    The digital board should be good. There is still a chance that you may have a problem with just that input you are using for TV. For the good money say's that it is just a matter of getting the audio input set right.

    You had mentioned before that the TV was on OPT1, that may have something to do with the whole problem right now. The OPT1 input is an audio input, but it is for the fiber optic cable. That is a skinny and usually black cable that when plugged into a device, it will have a red light coming from the end of the cable.

    You mentioned a Shaw cable feed, is that your local cable provider? I am not familiar with Shaw, so I want to make sure that we both understand each other. If you are not using it, you should really just unplug it. It your Denon is set to "auto-detect" the problem could be that it is looking at the wrong input jack.

    something else that can be done to keep us from spinning our wheels, is to unplug the Motorola from the Denon and find another open input on the back of your receiver and then see if it plays thru that. Maybe the "aux or "video 2", just some thing that is not being used. also look into your owners manual and see if it tells you anything about which inputs can be used for HDMI. I am pretty sure that not all inputs will be able to use it. I don't have an owners manual, but do have a service manual. Only problem is that the service manual tells you nothing about how to operate the unit, only the schematics and circuit descriptions and part list.
    I am going to check the service manual now for something helpful.


  • Dave DeGain
    Dave DeGain Jun 23, 2008

    To VOTIT

    These Denon receivers do not have an audio amp IC, they have discrete outputs, that means they have transistors. This one has darlington transistors. to fix the amp cost about $175 if it has a blown channel, I know because I fix a few of these every week.
    This one does not have a blown channel


  • Dave DeGain
    Dave DeGain Jun 23, 2008

    Yes, if you are giving up on this and need it repaired, it may still be under warranty. These get a 2 year warranty from Denon. I still think you will find the problem with the setting for that input.
    I know this unit is really quirky, and hard to set up, but if you give it a couple of hours to clear your mind, and then get a fresh look at it, along with your owners manual in front of you. I think you will figure it out.
    I am also willing to give it another try. since you get audio form the DVD, I just believe that it is a setting problem.

    Thanks for listening to me, and good luck with it. I am hear if you need me.


  • Dave DeGain
    Dave DeGain Jun 23, 2008

    Hi Jean,

    I have one last thing for you to try. I do not think that the owners manual has this procedure in it.

    This is how to do a factory reset on this model.

    Be advised that you will lose all the preset setting and will need to put them back in again, but this may just be the one that works for you.
    Taken right from the service manual of the AVR4306

    Initializing AV SURROUND RECEIVER
    AV SURROUND RECEIVER initialization should be performed
    when the μcom, peripheral parts of μcom, and Digital P.W.B. are
    replaced.
    1. Switch off the unit.
    2. Hold the following NIGHT button and PURE DIRECT button,
    and switch on the unit.
    3. Check that the entire display is flashing with an interval of
    about 1 second, and release your fingers from the 2 buttons
    and the microprocessor will be initialized.

    Please let me know if this helps. If you did not reset the unit this way, you really should try it.

    Good luck,
    Dave




  • Dave DeGain
    Dave DeGain Jun 23, 2008

    Hi Jean,

    I am glad to hear you are going to give it another go. Please,
    and I stress this, please try to do the reset procedure that I posted last time unless it is the exact same way you have already tried. It is an easy procedure you can start by holding down the 2 buttons together and keep them pushed in together , The "Night" button and the "Pure Direct" button. when you have both of those pushed in, then you turn on the power with those two button still being pressed in. When you press the power button you do not hold it in like you are with the other two buttons, you just press it firmly and then release. The display should start lighting up every segment at about 1 second intervals and when you see that happening, release the two buttons you have been holding in.

    That's it.

    Now you want to make sure you have all the input setting right. First one to set up should be the one for the Motorola TV tuner input that we have been having so much fun with.

    Make sure you know which HDMI it is on (HDMI 2 right now?) and don't let any other input stay in the setting for that input. Make sure it does not have OPT1 for the TV.
    Also, look in the manual to see if there are certain inputs that you can only use HDMI on. If it says that HDMI can only be used on Video 1 and DVD for example, then this may have been the problem all along. You will just need to put it on an input that will allow it to be used. I have seen this type of problem in the past, I just can't remember if it was a Denon or not.
    I work on so many different types of receivers, they get a little mixed up sometimes. I repair about 10 to 15 home theater systems a week, from Denon, to Kenwood, to Marantz, and even the cheap one's.

    Give me a holler when you are ready. I check my email about every 30 to 60 minutes. So any post you make will alert me pretty quick.



  • Dave DeGain
    Dave DeGain Jun 23, 2008

    Hello Jean,



    VERY BIG NEWS, READ FIRST!!!



    I am at work now and downloaded the owners manual and believe I have found your problem.



    First read page 20 of the owners manual. The very first thing on that page descibes in a simple way how to connect any HDMI device. What is more important is that it also directs you to page 71 to see what the on screen display looks like for setting up the video and the audio.

    If you have the owners manual on your computer in a PDF file, those pages would be page 25 and 76.



    I don't have more time right now to elaborate on this but will later.

    Since I now have the owners manual this will go much quicker now.

  • Dave DeGain
    Dave DeGain Jun 23, 2008

    Hi Jean,



    I do understand the puzzle, it can really be frustrating at times.



    The power disruption you had is the most likely cause of your headaches with this, as well as the instructions in the manual that seem like they require a Phd. in programming to really understand clearly.



    I think we are at a breakthrough point with this now.



  • Dave DeGain
    Dave DeGain Jun 24, 2008

    Hi Jean.



    This is looking more and more like a problem with the Denon, and not just the settings.



    If you have assigned the audio and the video (they are different selections and can be seen with the on screen display), and have even tried it on two different HDMI inputs, the Denon is looking like there is a problem. Plus the DVD player works normal on those same inputs, you would appear to be assigning the audio and video options correctly.



    Just for kicks, try the 3rd HDMI input and follow the instructions on page 71 of your owners manual. If that still does not help, try the reset procedure I listed above one more time.

    It should not take anywhere near 2 full minutes to make the display flash. Maybe only a matter of seconds.

    This time however, turn the power off with the main power button (in owners manual it is listed on page 4, the button that is labeled "3". It is a smaller button to the right of the power button with the lights on it.) . After you turn that off (the out postion), then hold in those two buttons and while holding those in press the main power button (the smaller one you just turned off) and keep holding it in for about 10 to 15 seconds to see if the display flashes like it is supposed to do. If it does not start flashing, then push the bigger power button to turn the unit on while still holding the two other buttons in. When you press the bigger power button, only press it for about a second. As long as you feel the tactile response and can tell the button was properly pushed. Do not use the remote for this procedure.



    It should reset, and if not it could be a problem with the Denon, since this information is taken right from the service manual of your model and is not the wrong way to do it.



    Then go thru and try setting up the Motorola first, just making sure that the audio and video have been assigned seperatly.



    If none of this works, I will help you further, but it may just have to be taken to a service center.



    You should also try connecting it with one of the other optons that come out of the Motorola, like component video and RCA (analog) audio or an optical cable for digital audio if you have one. See if that works now.



    On rare occasions I have seen that a receiver may have some compatability problems with a certain devise only, and the manufacter will put a bullitin out with the fix for it. I will look up any bullitins for this model and see if I come up with anything.

    It may take me a couple of hours to post again because I am at work right now in the middle of replacing a microprocessor in an Onkyo surround recveiver.



    If it does end up needing to get sent into a service center and you do not have one in your area, I can email you the form you will need to send it to Denon's factory service. There are not many authorized Denon service centers around. My shop is the only one in Michigan.



    Let me know how things are going, we will figure out something for you.



    Good luck,

    Dave

  • Dave DeGain
    Dave DeGain Jun 24, 2008

    Hi Jean,



    I am really sorry to hear that the help was not successful. Remember, if you can not find a service center that can work on it don't hestitate to ask me for the form you would need to send it to Denon directly. You must use this "return authorization" form or they will not accept it.



    It is a pretty exspensive unit, so even if it is not under warranty it is worth paying for an estimate to find out how much the repair would cost. This is a very unusual problem, so make sure how ever looks at it understands the problem correctly. I have seen many times when some repair centers will say something is fixed and after you pay for it, you find out that the original problem still is there. They mis-understand the problem and then do not test it properly to ensure the problem is really fixed.



    Since it will not reset, it must have a problem.



    And don't forget to give an appropriate rating to any, or all, of those who offered you help. Some people really deserve a rating that reflects the type of help they offered you. A "FixYA" should be reserved for the solution that helped you fix your unit or ensure that your problem could "only" be resolved by a proffesional service center.



    Dave

  • Dave DeGain
    Dave DeGain Jun 24, 2008

    Hi Jean,

    One more thing, please do not give me a rating of "thanks for trying" unless you were unhappy with my help.
    That is actually a bad rating that pulls down my score. it shouldn't be, but it is.

    Dave


  • Dave DeGain
    Dave DeGain Jun 25, 2008

    Hi jean,



    Thank you for that compliment, it means even more to me than the ranking.



    To give the best ranking you would click on the "FixYa" option under the solution that I gave you and before the next person's solution.



    I am rather new here (about 1 week) and have not ranked any solutions in the "Premium" section.



    I believe as long as you click the "FixYa" with the 4 turquoise diamonds it will do what yu want it do do.



    If you ever need any help with any type of audio, car or home, and also desktop and laptop computer problems you can directly contack me by clicking the "Ask me" right under my picture or go to the home page and under the top 5 experts is a link to "find experts" and you can click that and you will find my email address listed there.



    Once again, thank you for the kind words.



    Dave



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  • Master
  • 6,487 Answers

Try checking first the connection for the audio, then make sure the surround sound receviver is also connected properly and also turn everything OFF then turn back ON since you have a disruption just to refersh all devices and check it again if there will be sound already..

Hope that helps..........

Posted on Jun 22, 2008

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