Onkyo TX-SR605 user manual

1. Turn off your receiver and cut the power supply. You can do this by unplugging the receiver from the wall.
2. Remove all speaker and audio cables from the back.
3. Once you've disconnected everything, power up the device again.
4. If your receiver displays a clear sound or does not enter Protect Mode, then reconnect each speaker wire one at a time. Turn off the receiver power each time you connect a wire back to it to avoid a short circuit.
5. If the receiver enters Protect Mode after connecting a particular speaker, then you have found the source of the problem. Inspect the corresponding speaker and cable for any damage or loose wires.
6. If the receiver still enters Protect Mode with all wires disconnected, then the problem is internal. In such cases, it is recommended to consult with professional repair services as trying to repair it yourself could potentially damage the device further.
Remember: Always connect and disconnect cables with the receiver's power turned off to prevent damage.
If you can't fix the problem using these steps, you may need to contact Onkyo support or repair.

There could be several reasons why there is no sound coming from your Onkyo receiver. Here are some troubleshooting steps you can try:
1. Check the connections: Ensure that all the audio cables are securely connected to the correct audio inputs and outputs on both the receiver and your audio source (such as a TV, DVD player, or game console).
2. Volume and mute settings: Make sure the volume on the receiver is turned up and not muted. Check the remote control or front panel of the receiver for volume controls and mute buttons. Also, check the volume settings on your audio source to ensure it is not turned down or muted.
3. Speaker connections: Verify that the speaker wires are properly connected to the receiver and speakers. Make sure each wire is securely inserted into the corresponding speaker terminal and that there are no loose connections.
4. Speaker protection mode: Some Onkyo receivers have a built-in protection mode that activates in case of a potential short circuit or overload. Check the display on the receiver for any error messages indicating a protection mode, and consult the receiver's manual for instructions on how to resolve it.
5. Input selection: Make sure you have selected the correct input source on the receiver. Use the input selection buttons on the remote control or front panel of the receiver to cycle through the available inputs until you hear sound.
6. Reset the receiver: Turn off the receiver and unplug it from the power outlet for a few minutes. Then plug it back in and turn it on. This can sometimes help restore any glitch in the system.
7. Software/firmware update: Check if there is any firmware or software update available for your Onkyo receiver. Updating the firmware can sometimes fix audio-related issues.
If none of the above troubleshooting steps resolve the issue, it may be a hardware problem with the receiver. In that case, it is recommended to contact Onkyo customer support or take it to a professional technician for further assistance or repair.