Sonos Arc Soundbar F75 Error Code Guide (Fast Fix)

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What This Error Means

F75 on a Sonos Arc setup basically means “ARC/eARC device not detected or unstable.”

In plain English: your TV or AV receiver is losing the HDMI‑ARC link to the Arc, so it dumps the audio and throws the code.

Sonos itself doesn’t show F‑codes; this is your TV/receiver’s internal error, but it’s almost always triggered by a bad HDMI‑ARC/eARC connection or settings mismatch with the Arc.

Official Fix

Do the boring, official stuff first. It fixes this most of the time.

  • Kill all power first. Unplug the TV, the Sonos Arc, and any HDMI switch/receiver from the wall for at least 60 seconds.
  • Check you’re on the real ARC/eARC port. The Arc must be plugged into the HDMI port labeled ARC or eARC on the TV or receiver. Any other HDMI port will throw handshake errors like F75.
  • Use a proper HDMI cable. Use the original Sonos HDMI cable or a certified Ultra High Speed HDMI 2.1 cable. If the cable’s kinked, frayed, or cheap, swap it.
  • Reconnect in the right order. Plug HDMI into the TV’s ARC/eARC port and into the Arc. Then power up:
    • Power the TV on first and let it fully boot.
    • Then plug in and power the Sonos Arc.
  • Fix the TV audio settings. On the TV:
    • Set Sound Output (or similar) to HDMI ARC/eARC or Receiver.
    • Turn CEC back on (called Anynet+, Simplink, Bravia Sync, etc., depending on the brand).
    • If there’s an eARC mode, set it to Auto or On.
    • Set Digital Audio Out to Auto or Dolby Digital. Avoid weird “PCM only” or “RAW” settings unless the Arc is silent.
  • Update firmware. In the Sonos app, update the Arc. In the TV menus, run a software update. Outdated HDMI/eARC firmware causes half these issues.
  • Test with only the Arc connected. Disconnect consoles, streaming sticks, and other HDMI gear from the TV. Leave just the Arc on the ARC/eARC port and reboot. If F75 disappears, another HDMI device is confusing CEC.
  • Last resort: reset HDMI on the TV. Many TVs have a Reset HDMI / Reset audio / Factory reset sound option. Run that, then set ARC/eARC back up and reconnect the Arc.

If F75 still comes back with a known-good cable and clean setup, you’re either looking at a failing TV HDMI‑ARC port or a faulty Arc HDMI board.

The Technician’s Trick

When the official dance doesn’t cut it, this is the move techs actually use in the field.

  • Do a “deep” HDMI/CEC discharge.
    • Unplug everything from HDMI on the TV, including the Arc.
    • Unplug the TV and the Arc from the wall.
    • On the TV, press and hold the power button on the frame/remote for 10–15 seconds to drain the board.
    • Wait 2–3 minutes with everything dead.
    • Plug the TV back into power. Turn it on and wait until it’s fully up.
    • Now plug the Arc’s HDMI into the ARC/eARC port only, then plug the Arc into power.

    This hard-resets the HDMI/CEC stack. On stubborn sets, it keeps F75 from coming back.

  • Bypass eARC with optical as a stability test.
    • If your TV has an optical (TOSLINK) output and you have the Sonos HDMI–optical adapter, hook the Arc up that way.
    • Set TV audio output to Optical.
    • You’ll lose Dolby Atmos, but if audio is rock solid and F75 disappears, your TV’s ARC/eARC hardware or firmware is the real problem.

    That lets you keep using the Arc while you decide whether to live without Atmos, repair the TV, or replace it.

Is It Worth Fixing? (The Financial Verdict)

  • ✅ Fix: Arc is under 5 years old, works fine over optical or on another TV, and F75 only shows up on one HDMI‑ARC port.
  • ⚠️ Debatable: Arc is out of warranty, F75 shows up even with a new cable and different TV, but you really like the sound and don’t care about a small repair bill.
  • ❌ Replace: No sound at all, visible HDMI damage, burning smell, or repair quote gets close to the cost of a modern Atmos soundbar.

Parts You Might Need

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See also

Working through other F‑series or device error codes? These guides may help: