Question about Onkyo TX-SR502 Receiver

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No sound from the receiver

I am not getting any sound output from receiver. Even "Test Tone" function is not working. I have already tried resetting to factory defaults got same problem no sound even test, technician told me to buy BD3617KS part of the onkyo receiver

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Loose connection or cold solder and cleaning problem this is the main caused of no sound..Cold solder issues - each component is soldered into small holes on the printed circuit board which in turn connects said component to the other components. Due to time, heat, use, some solder joints would be cracked or loose. It is possible that the cold solder is still minimally connected (hanging by a thread). When the receiver turns on heat would be generated which would be sufficient to further loosen up the solder joint to the point it no longer provides electrical contact. Jarring the unit creates movement inside enough to re establish the contact, sometime good enough sometimes not enough.

Again, since the unit still operates (sometimes) then it is highly probable that there are no defective components. As you have surmised, it is possibly a loose connection, solder joints are "connections" except that molten soldering lead is used to attach/connect the component to the board, "loose connection" in this sense is equal to "cold solder".

Again on the assumption of no defective parts, then seeking a more experienced buddy for the soldering might be to your advantage. This is of course in addition to the possible electrical hazards when repairing....

Good luck:

Regards,
VOTIT

Posted on Aug 11, 2008

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It thick it a module bridge 0,8 A to 1,5A, if u have read the manual and found nothing in this favour and tried to factory default then its better to go with the technician.

regards,

Posted on Jul 30, 2008

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This sounds a bit odd. This unit is behaving like it is in protect mode but without the typical indication of it. I would be looking for a missing voltage first. Are there any other symptoms? Did the technician actually look inside and take some measurements?

Dan

Posted on Jul 30, 2008

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Yes it will be a capacitator or resistor has blown in the machanie

Posted on Jul 30, 2008

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Have no sound on my surround sound sony


Could be a number of things try each and test!

  1. Make sure the MUTE function has not been activated.
  2. Try turning up the volume level.
  3. Check that there are no headphones connected.
  4. Try setting the Audio/Video (A/V) receiver to a different Surround Sound mode. IMPORTANT: Verify that the source you are playing is encoded with Surround Sound audio. If not, the audio will be very difficult to hear using a Surround Sound setting. Set Surround Sound to OFF when playing a source that is not encoded with a Surround Sound signal.
  5. Check each speaker to make sure they are properly connected to the A/V receiver.
  6. Perform a Test Tone function to verify if the speakers are working correctly.
  7. Verify all external audio sources are securely connected to the appropriate inputs on the A/V receiver. NOTE: If the audio is being sent from a television to the A/V receiver, then it may be necessary to disable the internal speakers of the TV or set the audio output of the TV to FIXED or VARIABLE. If the audio output of the TV is set to VARIABLE, then you will need to increase the volume level of the TV.
  8. Make sure the correct audio input is selected on the A/V receiver.
  9. Confirm what type of HDMI devices are connected to the A/V receiver and then check the following:

    1. Test each one of the HDMI inputs on the A/V receiver to confirm that all of the inputs for the A/V receiver are working.
    2. Try a couple of different HDMI cables to verify there is not a bad set of cables.
    3. Unplug the video source from the A/V receiver and connect the source directly to the television. If there is still a problem with the audio, continue to the next step. If connecting the source to the TV corrects the sound issue, service will be needed on the A/V receiver.
  10. Verify the DEMO (demonstration) mode is not active.
  11. Change the ATT (attenuate) setting. NOTE: The procedure to change the ATT feature varies by model.
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