Onkyo TX 8050 No Sound

How to Troubleshoot No Sound Issue in Onkyo TX 8050 Stereo Receiver

1. Check Connections and Settings

   • Ensure the stereo receiver is not in protection mode.
   • Verify there is sound coming out of at least one of the preamp outputs.

2. Inspect for Loose Connections

   • Check all cables and connections for any loose or damaged cables.
   • Ensure that all speakers are properly connected and the terminals are secure.

3. Perform a Factory Reset

   • To reset the receiver, hold down the tuning mode button while pressing input CD and speakers.
   • If there is still no sound, proceed to the next step.

4. Check Power Supply

   • Measure the voltages carefully to ensure the receiver is receiving power as expected.
   • Look for any anomalies in the power readings that could indicate a power supply issue.

5. Inspect Preamp Output

   • Use a scope to check for audio signals at the preamp output.
   • Look for any abnormalities or lack of signals that could indicate a problem with the preamp section.

6. Check for Faulty Components

   • Inspect the board for any visible signs of damage or faulty components such as capacitors or resistors.
   • Look for leaking or bulging capacitors, which are common culprits for sound issues.

7. Replace Faulty Components

   • If you identify any faulty components, such as capacitors, replace them with new ones of the same value.
   • Ensure proper polarity when replacing components to avoid further damage.

8. Test for Sound

   • After replacing any faulty components, power on the receiver and check for sound output.
   • Ensure the correct input source is selected, and the speakers are connected properly.

9. Final Checks

   • Verify that all connections are secure and the receiver is functioning correctly.
   • Test different audio sources to ensure the sound issue has been resolved.

10. Reassemble and Test

    • Once you confirm the sound is working, reassemble the receiver by securing all screws and connectors.
    • Test the receiver with various audio sources to ensure the issue has been successfully resolved.

By following these steps, you can troubleshoot and potentially resolve the no sound issue in your Onkyo TX 8050 stereo receiver.