TV NO SOUND TROUBLESHOOTING
Connect to TV, but no sound?
We'll check your TV audio setting, cable, and headphone connection—one clear step at a time.
YOUR PRODUCT
Which model do you have?
YOUR CONNECTION
How are the bluetooth transmitter connected?
What cable connects your TV to the transmitter?
Match the shape at both ends—the TV port must be labeled OUT.
Choose the cable currently running from the TV to the transmitter and Ensure the cable is plugged into the TX input port of the transmitter.
YOUR TV
Choose your TV brand
SET THE TV OUTPUT
Samsung Optical setup
- 1. Press Home → Settings → All Settings → Sound.
- 2. Open Sound Output and choose Optical / Digital Audio Out.
- 3. Open Expert Settings → Digital Output Audio Format → PCM.
PCM
PCM
Menus may vary by model year.
Choose PCM—not Auto, Bitstream, Dolby, or DTS. If the menus look different, search your TV model + "set PCM". Do not plug in both the OPTICAL and AUX cables at the same time.
SET THE TV OUTPUT
LG Optical setup
- 1. Press Settings → All Settings → Sound..
- 2. Open Sound Out → Use Wired Speaker → Optical Out Device.
- 3. Open Advanced Settings → Digital Sound Output → PCM.
Menu / All Settings › Audio
Menus may vary by model year.
Choose PCM—not Auto, Bitstream, Dolby, or DTS. If the menus look different, search your TV model + "set PCM".
SET THE TV OUTPUT
Sony Optical setup
- 1. Press Settings → Display & Sound → Audio output.
- 2. Set Speakers to Audio system and enable Optical output if shown.
- 3. Open Digital audio out → PCM.
Menu / All Settings › Audio
Menus may vary by model year.
Choose PCM—not Auto, Bitstream, Dolby, or DTS. If the menus look different, search your TV model + "set PCM".
SET THE TV OUTPUT
TCL Optical setup
- 1. Open Settings → Display & Sound / Audio → Audio Output.
- 2. Choose Optical / Digital Audio Out.
- 3. Set Digital Audio Out / Digital Audio Format to PCM. For a TCL Roku TV, use the Roku steps.
Menu / All Settings › Audio
Menus may vary by model year.
Choose PCM—not Auto, Bitstream, Dolby, or DTS. If the menus look different, search your TV model + "set PCM".
SET THE TV OUTPUT
Roku Optical setup
- 1. Open Settings → Audio → Audio output.
- 2. Choose Optical to send sound through the optical port.
- 3. Open Digital output format → Stereo. Roku labels PCM output as Stereo.
Menu / All Settings › Audio
Menus may vary by model year.
Choose PCM—not Auto, Bitstream, Dolby, or DTS. If the menus look different, search your TV model + "set PCM".
SET THE TV OUTPUT
VIZIO Optical setup
- 1. Open Menu / All Settings → Audio.
- 2. Set TV Speakers to Off or Auto if sound stays on the TV only.
- 3. Open Digital Audio Out → PCM.
Menu / All Settings › Audio
Menus may vary by model year.
Choose PCM—not Auto, Bitstream, Dolby, or DTS. If the menus look different, search your TV model + "set PCM".
SET THE TV OUTPUT
Hisense Optical setup
- 1. Open Settings → Display & Sound → Audio Output. On VIDAA models, open Settings → Sound → Audio Output Settings.
- 2. Set Audio Output to Optical / SPDIF.
- 3. Open Digital Audio Out → PCM.
Menu / All Settings › Audio
Menus may vary by model year.
Choose PCM—not Auto, Bitstream, Dolby, or DTS. If the menus look different, search your TV model + "set PCM".
SET THE TV OUTPUT
Philips Optical setup
- 1. Open Settings → Sound / Audio → Advanced.
- 2. Choose Optical / Audio System.
- 3. Set Digital Output Format to PCM or Stereo (uncompressed). For a Philips Roku TV, use the Roku steps.
Menu / All Settings › Audio
Menus may vary by model year.
Choose PCM—not Auto, Bitstream, Dolby, or DTS. If the menus look different, search your TV model + "set PCM".
SET THE TV OUTPUT
Panasonic Optical setup
- 1. Press Menu → Sound / Audio.
- 2. Open Digital Audio Out, Digital Audio Selection, or SPDIF Selection.
- 3. Select PCM.
Menu / All Settings › Audio
Menus may vary by model year.
Choose PCM—not Auto, Bitstream, Dolby, or DTS. If the menus look different, search your TV model + "set PCM".
SET THE TV OUTPUT
Sharp Optical setup
- 1. Google / Android TV: open Settings → Display & Sound → Audio Output. Older AQUOS: open Menu → Initial Setup.
- 2. Choose Optical / Digital Audio Out.
- 3. Open Digital Audio Out → PCM.
Menu / All Settings › Audio
Menus may vary by model year.
Choose PCM—not Auto, Bitstream, Dolby, or DTS. If the menus look different, search your TV model + "set PCM".
SET THE TV OUTPUT
Insignia Optical setup
- 1. Fire TV: open Home → Settings → Display & Sounds → Audio Output.
- 2. Choose Optical / Digital Audio Output.
- 3. Open Digital Audio Format → PCM. On non-Fire models, use Menu → Audio → Digital Audio Format / Audio Delay.
Menu / All Settings › Audio
Menus may vary by model year.
Choose PCM—not Auto, Bitstream, Dolby, or DTS. If the menus look different, search your TV model + "set PCM".
SET THE TV OUTPUT
Other Optical setup
- 1. Open your TV’s Sound or Audio Output settings.
- 2. Choose Optical / Digital Audio Out.
- 3. Set Digital Audio Format to PCM / Stereo.
Menu / All Settings › Audio
Menus may vary by model year.
Choose PCM—not Auto, Bitstream, Dolby, or DTS. If the menus look different, search your TV model + "set PCM".
No PCM setting is needed
AUX / 3.5 mm / RCA is analog audio- Connect the cable to HEADPHONE OUT or AUDIO OUT—not Audio In.
- For 3.5 mm, select Headphones / Audio Out and raise the TV volume to about 50%.
- For RCA, use only red and white ports labeled AUDIO OUT.
The app or streaming device may still be sending Dolby. Please turn off Dolby Audio.
You're all set!
Your TV is outputting PCM audio and your headphones should have sound. Put the headphones on and enjoy the show.
Contact Us
Hello! Welcome to SOOMFON support! To help you better, describe your product model and the problem you encounter in detail in a single message. For example, my bluetooth transmitter does not pair.
