What might cause this?
Similar symptoms can have different causes across models and software versions. These are possibilities, not a diagnosis.
Possible causes
- The set-top box or soundbar may be muted.
- TV audio output may target another device.
- The HDMI cable or source may be faulty.
- The broadcast audio feed may be distorted.
What can you try?
Try these safe, user-level checks in order; do not open the device. Menu labels may differ by version.
- 01
Step 1
Check volume and mute settings independently on TV, set-top box and soundbar.
- 02
Step 2
Check the selected output under TV Sound Output settings.
- 03
Step 3
Reconnect HDMI safely and try a known-good cable/port if possible.
- 04
Step 4
Run Samsung’s Sound Test under Device Care/self-diagnosis.
- 05
Step 5
If the built-in sound test is clear but broadcast audio is bad, investigate the external source/provider.
How can you confirm the fix?
Compare a built-in TV app with the set-top box to isolate an input-specific fault.
When should you contact service?
If the built-in Sound Test is distorted, contact Samsung support.
⚠ Stop using a device if it overheats, shows liquid damage, smells burnt or has a swollen battery.
Will a repair cost money?
Settings, cables and user checks may require no repair. Hardware costs depend on the exact model, warranty and service diagnosis; no fixed price is promised.
Quick answers
Could these checks affect warranty?
Use only external checks recommended for end users by the manufacturer. Opening batteries, electronics or sealed parts can create safety and warranty risks.
What if the steps do not help?
Write down your model, software version and test results. Share those details with official support rather than repeating potentially unsafe actions.
How was this sourced?
This is an original summary of the manufacturer support document; use the official page for current, model-specific instructions.
Open official manufacturer document ↗Features and model coverage vary. Compare the source with your exact model.