Question about Onkyo TX-SR502 Receiver

2 Answers

Onkyo TX-SR502 - o Sound!

After enjoying this receiver for 2.5 years, it has decided to not output sound any more. Are there any solutions to this problem other than purchasing a new system? By the way, I get no sound from speakers or headphones. Also, no Test Tones sound either. Thanks!

Posted by Anonymous on

  • 3 more comments 
  • Moonduck Nov 22, 2007

    I no longer have output on any of my speakers after 3+ years of great performance. I purchased the service manual and ran the DSP diagnostic which causes the display of the following code: _1A48E710x_00_x. Most of it makes sense for the auto FM tuning mode the receiver is in, but a 7 in the 7th field is not even a valid state (only 0,2 or 5 are valid) and the last x indicates that the DSP is NG. I could replace the DSP chip or board but the invalid code makes me think there could be other problems.

  • Kid A Feb 28, 2008

    Same problem -- no sound. Yesterday, my TX-SR052 worked perfectly. Today, nothing -- all panels light up as if nothing's wrong, but no sound from speakers or headphones.


    Duncan's solution sounds great, and I'd love to investigate further before scrapping the unit and buying a new one. Problem is, I don't know how to test/remedy this (DC voltage problem). Please advise.

  • Knightro2 Mar 03, 2008

    I have somewhat of a similar solution. After 3+ years of no problems, yesterday afternoon I turn on my receiver and no sound. Everything looks fine on the display. Then about after 5 minutes the sound comes on and works beautifully. This has happened 3 times so far in a row. I just came home from work and no sound. Wait about 5 minutes, and it comes on. Would this still be a "protect mode" type situation?

  • jfentd Apr 18, 2009

    sometimes no sound comes out of any outputs

  • Anonymous Mar 30, 2014

    the test tone does not produce a sound for that channel the speaker is not the problem

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2 Answers

Anonymous

Pls make it reset at factory level ,but pls note that you have to keep it in aauto mode

Posted on Mar 13, 2007

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Mike Duncan

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  • 219 Answers

It sounds like your system has gone into protect mode which means you probably have some DC voltages in your output circuit area that have triggered the protect circuit. This mostly happens when you have some damaged output transistors or when they are getting some incorrect voltages themselves. When it goes into protect because of ONE bad channel then it will disconnect ALL output channels from their speakers. There are a number of things that can cause the "no sound all channels" problem, but the most common is what I have just said. I hope this helps. (I am of course assuming that the unit will actualy turn on and that speakers are attached etc., etc.) Good luck.

Posted on Mar 13, 2007

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