Symptoms
- Popping or crackling sounds during audio playback
- Static noise that comes and goes
- Problem is worse at higher volumes
- Crackling only happens with one app, input, or soundbar
Likely causes
- CommonLoose or damaged audio cable (HDMI-ARC, optical, or RCA)A partially connected or frayed cable can introduce crackling, especially when the TV or cable is bumped.
- CommonAudio format mismatch with a soundbar or receiverSending a surround sound format the soundbar doesn't fully support can cause crackling or distortion.
- PossibleFaulty internal speakerA damaged speaker cone can produce a rattling or crackling sound, especially at higher volume.
- Less commonInterference from nearby electronicsPoorly shielded cables running near power cords can pick up electrical interference.
What to do
- Reseat the audio cable (HDMI-ARC, optical, or RCA) at both ends.
- If using a soundbar, change the TV's digital audio output format from 'auto' to 'PCM' to rule out a format mismatch.
- Test with a different app or input to see if crackling is isolated to one source.
- Turn the volume up and down slowly to check if crackling is tied to a specific volume range, which can point to a speaker issue.
- Move any nearby power cords or routers away from audio cables to rule out interference.
- Try a different audio cable if one is available.
- If crackling only comes from the TV's own internal speakers on every source, a speaker may be physically damaged.
Tools and parts
HDMI or optical audio cableSearch: “optical audio cable for TV”
When to call a pro
If crackling comes from the TV's built-in speakers on every input after ruling out cables and settings, a technician can check the internal speaker.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.