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 on

2 Answers

Re: Onkyo TX-SR502 - o Sound!

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

Posted on Mar 13, 2007

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert who has answered 200 questions.

  • Expert
  • 218 Answers
Re: Onkyo TX-SR502 - o Sound!

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

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Can you use an Onkyo RC-771M remote control to operate Onkyo receiver TX-SR502 ?

Unfortunately, the RC-771M remote doesn't control the TX-SR502. It will only work with these Onkyo models: TX-NR1008 and TX-NR808. The RC-567M is the one for the TX-SR502; replacement remotes that are exact replacements are still available from various places including .

Since the TX-SR502 was released in ~2004, that replacement remote probably won't control other devices that were released in 2004 or later. Onkyo changed its IR code programming before the TX-NR1008 was released in ~2010 and the RC-771M can't communicate with the older receiver. The manuals for the receivers listed above are still available from Onkyo on the product page under the Downloads tab.

I wish that I had better news for you.

Cindy Wells

Jan 31, 2016 | Onkyo TX-SR502 Receiver

1 Answer

When connecting optical inputs there is no audio output

You have to assign each digital input.

Register and download the manual for free at

Search the document for "assign".

Mar 27, 2011 | Onkyo TX-SR502 Receiver

1 Answer

I have an audio problem with my TX-SR502.

If your remote also controls the Cable Box you might want to look at its audio settings. Maybe you muted it.

BTW: it would be a good idea to also run video and analog audio from the cable box directly to the TV if it has speakers so you can watch and listen independent of the Onkyo.

Mar 11, 2010 | Onkyo TX-SR502 Receiver

2 Answers

My Onkyo TX-SR502 suddenly no sound output. Why?

Same issue on a friend's receiver. I have checked and no signals from preamp pcb to main amp board, which is idling just fine, all channels. The day he brought in we checked it and it played just fine. I then took apart the faceplate to clean the display window and after that had it working for a day and a half while working on other stuff. He comes back a month later to pick up and now nothing. I have decided this is not going to go any further and just thought I'd share my findings. I think it's time we all move on.

Feb 22, 2010 | Onkyo TX-SR502 Receiver

1 Answer

My TX-SR502 AV receiver has no output sound in any mode but CD. Thsi has been a progressivly deterioration from sometimes sound to finally no sound.

sounds like the receiver input mode may be in the wrong setting. or check the 'direct' button. turn it off

Nov 03, 2009 | Onkyo TX-SR502 Receiver

1 Answer

My Onkyo tx sr502 quit producing sound?

I have the same problem.It's definitely the pre-amplifier board (board with speaker terminals).I did not quite nail the exact component yet but I replaced with a working one and got back sound output.

Jan 06, 2009 | Onkyo TX-SR502 Receiver

1 Answer

Onkyo TX-SR502 AV receiver

this could be the pre amp transistor or the power amp that needs replacing
the pre amp transistor is cheap but the power amp is not
if you did not crank it , then it is probably just the transistor that needs replacing


Oct 31, 2008 | Onkyo TX-SR602 Receiver

1 Answer

Onkyo TX-SR502 protection mode

Hello! One of the channels in your unit has shorted output transistors and is sending about 60 volts towards your speakers. If your unit has an output chip ( I don't ever remember seeing an Onkyo with a chip though...all discrete transistors ) it is shorted. Your unit is well worth repair. Onkyo is an execellent unit. Please rate this solution! Thankyou!


Oct 08, 2008 | Onkyo Audio & Video Receivers

1 Answer


you have to check your output configuration

Feb 23, 2008 | Onkyo TX-SR502 Receiver

Not finding what you are looking for?
Onkyo TX-SR502 Receiver Logo

1,352 people viewed this question

Ask a Question

Usually answered in minutes!

Top Onkyo Audio & Video Receivers Experts

 Mike M
Mike M

Level 3 Expert

3320 Answers

D. E. Hev

Level 3 Expert

1059 Answers


Level 3 Expert

2963 Answers

Are you an Onkyo Audio and Video Receiver Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides