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Marantz · Troubleshooting · 2026-03-09

Marantz SR6013 Blinking Red Light — Protection Mode Fix

Marantz SR6013 Blinking Red Light — Protection Mode Fix

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Quick answer

Symptoms

When your Marantz SR6013 is experiencing issues, you may notice:

Quick checks

Before diving into more detailed troubleshooting, perform these quick checks:

  1. Ensure the receiver is not in a confined space and has adequate ventilation.
  2. Check that all speaker wires are properly connected and not frayed or shorted.
  3. Confirm that all HDMI cables are securely connected and functional. Consider using a Certified Ultra High Speed HDMI cable (paid link) for optimal performance.
  4. Make sure the receiver is not overloaded with too many speakers or devices.

Step-by-step fix

  1. Power Cycle the Receiver: Turn off the receiver, unplug it from the wall, and wait for at least 10 minutes. Plug it back in and turn it on.
  2. Check for Overheating: Feel the top and sides of the receiver. If it’s hot, ensure it has enough space around it for airflow. If it’s too hot, turn it off and let it cool down.
  3. Inspect Speaker Connections: Turn off the receiver and check all speaker wires for damage or loose connections. Reconnect any that are loose and replace any damaged wires.
  4. Disconnect All Devices: Unplug all devices connected to the receiver, including HDMI cables, and power it on. If the red light stops blinking, reconnect devices one by one to identify the faulty one.
  5. Reset the Receiver: If the problem persists, perform a factory reset. Refer to your user manual for specific instructions on how to reset the Marantz SR6013.
  6. Contact Support: If none of the above steps work, it may be time to reach out to Marantz customer support or a professional technician for further assistance.

If it still doesn't work

If you’ve followed all the steps and the red light continues to blink, it may indicate a more serious internal issue. Consider seeking professional help or checking for warranty options.

Thinking About Upgrading Your AV Receiver?

If your receiver is causing recurring HDMI, eARC, or audio issues, it may be worth evaluating whether a newer model solves the problem at the hardware level. Our best AV receivers under $500 guide covers current picks with HDMI 2.1, eARC, and Dolby Atmos — including the Denon AVR-S770H and Yamaha RX-V4A which handle modern 4K/120Hz passthrough reliably.

FAQ

Q: What does the blinking red light mean?
A: It usually indicates that the receiver is in protection mode due to overheating or a short circuit.

Q: Can I continue to use my receiver with the blinking light?
A: No, it’s best to turn it off and troubleshoot the issue to prevent further damage.

Q: How can I prevent my receiver from overheating?
A: Ensure it has adequate ventilation, avoid placing it in enclosed spaces, and keep it away from heat sources.

Q: What should I do if my speakers are not working?
A: Check all connections, ensure the speakers are powered on, and follow the troubleshooting steps outlined above.

Q: Is there a way to reset the receiver without the remote?
A: Yes, you can usually reset it using the buttons on the front panel. Consult your manual for specific instructions.

🛒 Recommended Fix-It Gear

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