Question about Onkyo TX-SR803 Receiver

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Listening modes not working??

I have a Onkyo Tx sr804 and it is used very lightly. Just the other day the listening modes stopped working for my sources. The only listening modes that sound comes out are the "direct" and "pure audio" listening modes. All other listening modes show up and I can change them, but there is no sound at all. This sucks, I've only had the receiver for two years. Talked to tech support they gave me all the usuals, reset, unplug. Did all that, didn't work. Any help is appreciated before i have to send it out for expensive repair.

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  • citizennate7 Nov 11, 2008

    Thank you very much for your quick and great reply. So I'm guessing my next bet would be to take it to the authorized onkyo tech nearest to me. What can cause these problems to happen?? Do you see this pften??



    Thanks,

    Nate

  • citizennate7 Nov 11, 2008

    Once again I appreciate your time and sharing of knowledge. If I have any more questions I know where to turn. I'll just ship it to you, ha ha ha!!



    Thanks again!!

    Nate

  • citizennate7 Nov 11, 2008

    Hey Dave, sorry to bother you again for your input, but why are those two "listening modes" still working and not the others? Is it just the pathways and the way they are set up? And since those two still work is that a clue as to there not being multiple unfixable damage to the board??



    Thanks a ton,

    Nate

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I am a little hesitant to tell you what this is because sometimes people give bad ratings to an expert when they do not get the answer they want to hear. I will take a chance here and assume you are a reasonable person and tell you what the most likely cause is. I have been reparing these type of receivers for as long as they have been making them, and every time I see this particular problem it is always something on the digital board. This is the board the the optical and coax inputs go into on the back. They also run all the audio thru this board, and when you only get the audio that you have, a problem is going to be found there. There is some good news and some bad news that goes with this, first the good news. Many times (about half), the digital board only needs to have some of the solder reflowed on a few of the IC's and it will return to normal operation. If this is the problem your repair should only cost from $90 to $150 depending on the rates of the shop. Now the bad news, if the board has a couple of bad compnents on it, it will need to be replaced. The reason that is bad news, is because those boards are very expensive, usually over $250 just for the board, if the board is even available. Many of these receivers you can not get the digital board for them. Most all of audio equipment is component level repair and there are not many technicians who can troubleshoot these boards, they are a very difficult task.

I hope this free information was helpful, and if so a "FixYa!" would be the appropriate rating. You do not need to have your receiver fixed in order to give a good rating, only that you are given the correct information.

Let me know if I can be of any more help to you, good luck with your Onkyo.

Dave

Posted on Nov 10, 2008

  • Dave DeGain
    Dave DeGain Nov 11, 2008

    I see this type of thing a lot. The most common reason is because of the heat that audio receivers generate. It causes the solder to get degraded from the cycle of heating and cooling over and over again for a few years. It just breaks down the chemical composition of the solder. The solder will still hold, but it just doesn't have the right properties anymore to conduct electricity they way it needs to for these circuits to operate at proper levels. It can even cause the components to break down from heating and cooling in cycles and with bad solder connections the components do not have the proper voltage levels either and that can cause component failures.

    And yes, an authorized Onkyo service center would be best, but if it is not under warranty you can take it to any good service center.

    Thanks for the great rating, I really do appreciate it. It is the only reward we get for offering people free help. You would be surprised at how many people give bad ratings because the answer they hope for is not the correct answer. Some experts even give wrong advise because they think it will get them a better rating, I won't do that, I will live the results of the truth.

    Thanks again,

    Dave

  • Dave DeGain
    Dave DeGain Nov 12, 2008

    When you start getting problems with these digital boards the problems can be very strange and not make much sense sometimes. Thats one of the reasons they are so difficult to troubleshoot as well. I have actually fixed some of these thinking that the part I am replacing is not going to fix the problem, but it does fix it, or sometimes it will only fix part of a problem. When you have several problems and trace it back to a particular part, but that part only fixes one out of 2 or 3 problems. Sometimes there just seems to be no rhyme or reason to why some of these problems occur or what it takes to fix them. Bad solder connections seem to be a very big problem with audio equipment because of the heat they generate.

    Dave


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First of all, thank you for purchasing the Service/Repair Manual of Onkyo TX-SR804.

Please email me at mjsvillanueva23@yahoo.com I will send to you the copy. It is a PDF file format and can't be uploaded here.

Again thank you so much!

Take care and have a great day!

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