Sonos Arc Soundbar F58 Fix (No-Nonsense Guide)

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What This Error Means

F58 on a Sonos Arc soundbar means the bar has triggered an internal protection fault.

The soundbar is cutting audio because it detected abnormal power or amplifier behavior and is trying not to cook the electronics.

Typical signs:

  • Sound drops out or never starts, sometimes mid‑movie or mid‑song.
  • The status light may flash or change, and the app may throw a generic error.
  • Power cycling might bring it back for a bit, then it trips again.

The code doesn’t tell you the exact blown part. It just says, “Something in power/amp/speaker land looks dangerous, so I’m shutting down.”

Official Fix

Here’s the clean, manual-style way to deal with F58. Do it in this order, don’t skip around.

  1. Hard power reset (properly).
    • Unplug the Arc from power.
    • Unplug HDMI from the TV.
    • Wait at least 60 seconds so the internals actually drain.
    • Plug the Arc directly into a wall outlet (no strip, no UPS).
    • Wait for the light to go to its normal solid state, then test audio using the Sonos app (stream music), not the TV.
  2. Clean up power and cabling.
    • Use a different wall outlet if possible. Avoid sharing with big loads (heaters, fridges, space heaters, etc.).
    • If you’re using a cheap power strip, remove it from the chain and go wall → Arc only.
    • Make sure the power cord is fully seated in the back of the Arc. No wobble.
    • Swap the HDMI for a known good, high‑speed/eARC‑rated cable if F58 only shows when the TV is involved.
  3. Give it breathing room.
    • If it’s stuffed in a tight cabinet or pressed against a wall, pull it forward.
    • Feel the case. If it’s hot, leave it unplugged 20–30 minutes to cool down before you try again.
    • Don’t sit it on top of another hot device (AVR, cable box, console).
  4. Update the system.
    • Open the Sonos app.
    • Check for system updates and install everything.
    • When the update finishes, reboot the Arc again (unplug 30 seconds, plug back in).
  5. Remove and re-add in the app (no wipe yet).
    • In the Sonos app, remove the Arc from its room/system.
    • Close the app, wait a few seconds, then reopen it.
    • Add the Arc again as a new product and run through the setup.
    • Test music playback for at least 10–15 minutes.
  6. Last official step: factory reset + support.
    • Warning: this wipes settings, favorites, Trueplay, everything.
    • Unplug the Arc from power.
    • Press and hold the Join button on the back (infinity symbol).
    • While holding the button, plug the Arc back in and keep holding until the light flashes orange and white.
    • Release the button and set it up again in the app from scratch.
    • If F58 comes back after this clean setup, you’re at the point Sonos calls “service required” – contact Sonos support for repair/RMA options.

The Technician’s Trick

Here’s the move techs use to sort out a real hardware fault from bad power, bad HDMI, or a cursed TV.

  • Isolate the Arc from everything.
    • Unplug power, HDMI, Ethernet – every cable.
    • Leave it dead for at least 15 minutes so the power section fully discharges.
    • Move it to a different room and plug it into a different wall outlet on a different circuit if you can.
  • Bring it up bare.
    • Plug in only the power cable.
    • Use Wi‑Fi and the Sonos app to add it as a fresh device again.
    • Play music at low volume for 10–15 minutes. Then medium volume for another 10–15.
    • If it runs clean with no F58 like this, the amp is probably fine. Your TV/HDMI/power setup was likely what was tripping the protection.
  • Reconnect in a controlled way.
    • Unplug the Arc again.
    • Connect a known‑good HDMI 2.1/eARC cable from the TV’s eARC/ARC port to the Arc.
    • Turn the TV on first, wait for it to fully boot, then plug the Arc back in.
    • On the TV, disable any “enhanced” sound processing that can slam levels (auto volume, aggressive dynamic EQ) and test again.

If F58 only shows up when it’s tied to one specific TV or outlet, the bar is usually fine – the power or HDMI side of that setup is the real problem.

Is It Worth Fixing? (The Financial Verdict)

  • ✅ Fix: Arc is under warranty or under ~5 years old, no physical damage, and F58 improves or disappears after proper power, cable, and placement fixes.
  • ⚠️ Debatable: Out of warranty, F58 is intermittent, and resets keep it alive but the error keeps coming back every few weeks.
  • ❌ Replace: F58 is constant, there’s no sound at all, you smell burning or see scorch marks, or Sonos quotes a repair close to the price of a refurbished/new Arc.

Parts You Might Need

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See also

Neck‑deep in other weird error codes? These guides can help you beat them faster: