If you hear no sound from your WiiM device when using HDMI ARC with your TV, follow these troubleshooting steps:

Step 1. Check the HDMI Cable Connection

  • Ensure you are using a high-speed HDMI cable.
  • Confirm that the cable is securely plugged into the ARC/eARC port on the TV and the HDMI ARC port on the WiiM device.
  • If the issue persists, try using another high-speed HDMI cable.

Step 2. Verify the HDMI ARC/eARC Port

Make sure the cable is connected to the HDMI ARC/eARC port on your TV — it's usually labeled "ARC" or "eARC" next to the port.

For example, in the image below, Port 3 is labeled "eARC/ARC" — this is the correct port to use.

Step 3. Check the TV Settings

Check the following options in your TV's settings. Menu names and locations vary by brand and model.

  • HDMI-CEC is enabled. This setting may have different names depending on the TV brand, such as Anynet+ (Samsung), SIMPLINK (LG), or BRAVIA Sync (Sony).
  • The HDMI ARC/eARC port is enabled.
  • The TV's audio output is switched to the external speakers (WiiM device) via HDMI ARC/eARC.
  • The TV's audio format is set correctly:
    • For the WiiM Amp Pro, WiiM Amp Ultra, and WiiM Ultra, check that the TV's audio format is set to Stereo PCM or Dolby Digital.
    • For the WiiM Amp, check that the TV's audio format is set to Stereo PCM.
Note: When using the Stereo PCM format, if your TV has a Digital Audio Out Volume setting (or a similar option), make sure to set it to Max. Otherwise, the connected WiiM device may output very low or no sound.

For instructions, see General Guide to Setting Digital Audio Output to PCM for Various TV Brands.

Step 4. Check Your WiiM Device's Input Source

  1. Open the WiiM Home app.
  2. Go to the Browse tab.
  3. Make sure that HDMI ARC is selected as the source input for your WiiM device.

Step 5. Restart Your WiiM Device and TV

Power off your TV and WiiM device.

Unplug both for about 30 seconds, then plug them back in and power them on.

Step 6. Reset the TV

If there is still no sound after restarting both devices, consider resetting your TV to its factory settings as a last troubleshooting step.

Important: A factory reset can erase your TV's customized settings, network settings, installed apps, and account sign-ins.

  1. Reset your TV to its factory settings according to your TV's user manual.

    Reset options vary by TV brand and model. See the screenshot below for an example.

  2. After completing the TV's initial setup, reapply the audio settings in Step 3, including HDMI-CEC, external speaker output, and a supported audio format.

Further Assistance

If the problem persists, please contact WiiM Support for further assistance.