Sonos Arc Soundbar F63 Error Code Guide (Quick Fix)

Here’s the same flow Sonos support will drag you through, minus the hold music:

• 1. Make sure F63 is actually the Arc’s problem.
  • Check the Sonos app and confirm the error is tied to the Arc, not another speaker.
  • If the TV itself is showing F63 on-screen, that’s a TV error, not a Sonos one.
• 2. Do a proper hard power cycle.
  • Unplug the Arc’s power cord from the wall.
  • Pull the HDMI and Ethernet cables out of the Arc.
  • Wait at least 60 seconds. Let the power supply fully bleed off.
  • Plug the Arc directly into a wall outlet. No power strip, no smart plug, no UPS for this test.
  • Wait for the front light to go solid white.
  • From the Sonos app, play music to the Arc (still with HDMI disconnected) and see if it stays up without throwing F63.
• 3. Rule out bad power.
  • Try a different wall outlet, preferably on another circuit in the house.
  • Inspect the power cable: if it’s kinked, chewed, or loose in the Arc or the wall, replace it.
  • If F63 only shows up when the Arc is on a cheap power strip or shared outlet with heavy gear (space heater, big amp, etc.), keep it on a clean wall socket.
• 4. Check heat and airflow.
  • Put your hand on the Arc. Warm is normal. If it feels uncomfortably hot, that can trip protection.
  • Make sure it isn’t jammed in a cabinet, tight shelf, or touching insulation or fabric.
  • Give it 15–20 minutes powered off to cool if it was running hot, then power it back up and retest.
• 5. Update the Arc’s firmware.
  • With the Arc powered and the light solid white, open the Sonos app.
  • Go into system/settings and check for a system update.
  • Install any update, let the Arc reboot, then reboot it one more time by pulling power for 30 seconds.
  • Test again from the app (music) before you bring the TV/HDMI back into the mix.
• 6. Reconnect HDMI/eARC cleanly.
  • Use a known-good, high-speed HDMI cable. Don’t trust an ancient, mystery cable from a drawer.
  • Connect from the TV’s eARC/ARC HDMI port straight to the Arc’s HDMI port. Avoid adapters if you can.
  • On the TV, turn HDMI-CEC and eARC/ARC back on, then set TV audio to use the soundbar and test.
  • If F63 only shows when HDMI is connected, you’re likely dealing with a flaky HDMI port or cable, not the Arc’s amp itself.
• 7. Factory reset as the nuclear option.
  • This wipes the Arc from your system and erases its settings. Only do this after the steps above.
  • Unplug the Arc.
  • Press and hold the Join button on the back, then plug the power back in while holding the button.
  • Keep holding until the light flashes orange and white, then wait for it to turn solid green.
  • Open the Sonos app and set the Arc up again like a new speaker, then test for F63.
• 8. When to stop and call Sonos.
  • If F63 comes back even with: different outlet, no HDMI, fresh firmware, and a clean setup, you’re looking at an internal hardware fault.
  • Do not open the Arc. Everything inside is board-level; you won’t fix it on a kitchen table, and you’ll kill any warranty.
  • Contact Sonos support with the code, your serial number, and proof of purchase. Ask what they’ll do: warranty repair, out-of-warranty swap, or discount on a replacement.