The NA error on your Hisense Soundbar means the soundbar cannot detect a valid audio signal from the connected source. Checking your cable connections and input selection usually resolves it within a few minutes.

Error code NA
Meaning No audio signal detected on the selected input
Severity Low — usually a connection or setting issue, not a hardware fault
Time to fix 5–15 minutes
Tools needed None, though a spare HDMI or optical cable is useful

What the NA error means

NA stands for “No Audio” and appears on the soundbar’s display or LED indicator when it is powered on but not receiving a valid signal from the source it’s set to. This is common right after setup, after a power cut, or when switching between devices such as a TV, games console, or Blu-ray player.

The soundbar itself is rarely faulty in this situation. It’s almost always a mismatch between the input the soundbar is listening to and the device that’s actually sending audio, or a loose or damaged cable somewhere in the chain.

Common causes

  • The soundbar is set to the wrong input source (HDMI, optical, Bluetooth, AUX)
  • A loose, damaged, or low-quality HDMI or optical cable
  • The connected TV or device has its audio output muted or set incorrectly
  • ARC/eARC is not enabled in the TV’s audio settings
  • The source device is powered off or in standby
  • A temporary glitch after a firmware update or power outage

How to fix the NA error

  1. Check the input source: Press the input/source button on the soundbar remote and cycle through until it matches the device you want to hear (HDMI, optical, Bluetooth, or AUX).
  2. Inspect and reseat cables: Unplug the HDMI or optical cable from both ends, check for bent pins or damage, and plug it back in firmly.
  3. Confirm the source device is playing audio: Make sure the TV, console, or player is powered on, unmuted, and actively outputting sound.
  4. Enable ARC/eARC on your TV: Go to your TV’s sound settings menu and turn on HDMI-ARC or eARC so audio is sent to the soundbar correctly.
  5. Try a different cable or port: Swap the HDMI or optical cable for a known-working one, or use a different HDMI port on the TV.
  6. Power cycle both devices: Turn off the soundbar and the source device, unplug them for 30 seconds, then plug back in and power on in this order: TV first, then soundbar.

FAQ

Why does my Hisense soundbar show NA right after I turn it on?
This usually means it booted up on the wrong input. Press the source button to cycle to the correct input for your TV or device.

Does the NA error mean my soundbar is broken?
No. NA almost always points to a signal or connection issue rather than a hardware fault. If it persists after trying all inputs and cables, then a fault becomes more likely.

I fixed it once but NA keeps coming back — why?
This is often caused by a loose cable connection or a TV that resets its ARC/eARC setting after updates. Check the cable is firmly seated and re-enable ARC in the TV settings if needed.

If your TV itself is showing playback issues alongside the soundbar problem, it may help to review related guides such as Hisense Tv ERROR Error Code: Causes and Fixes or Hisense Tv ERROR Error Code: Causes and Fixes. For HDMI-ARC related sound problems, Hisense Tv ERROR Error Code: Causes and Fixes covers common connection faults. If you also use other audio equipment, the Sonos Soundbar ERROR Error Code: Causes and Fixes guide may be useful for comparison, alongside Hisense Tv ERROR Error Code: Causes and Fixes for further troubleshooting steps.