Soundbar makes a loud pop or static noise when switching inputs or turning on

Symptoms

• Loud pop or thump when powering the soundbar on or off
• Static/crackle briefly when switching between inputs
• Noise is startling or uncomfortably loud
• Issue happens consistently every time, not randomly

Likely causes

• CommonNormal relay-click or muting behavior during power/input transitionsMany audio systems briefly mute or click during switching as a protective measure, and a small pop can be normal.
• CommonGround loop or electrical interference from shared power circuitsDevices on different outlets can create a pop or static when switching states.
• PossibleLoose or degraded HDMI/optical/RCA connectionA marginal connection can produce audible static or pops during signal changes.
• PossibleFaulty surge protector or power stripA failing power strip can introduce noise into connected audio equipment.
• Less commonFailing internal relay or amplifier componentA loud, harsh pop (rather than a soft click) can indicate a component starting to fail.

What to do

1. Note whether the pop is a soft, brief click (often normal) or a loud, harsh noise (concerning) and how consistently it happens.
2. Plug the soundbar and connected source devices into the same outlet or power strip.
3. Check and reseat all HDMI, optical, and RCA cable connections.
4. Try a different, high-quality power strip or plug directly into the wall outlet instead.
5. Lower the volume before powering the soundbar on or off as a precaution while troubleshooting.
6. Test with different input sources to see if the pop happens on all of them or just one.

When to call a pro

If the pop is loud, harsh, or getting worse over time even with good connections and power, contact the manufacturer for repair, as this can indicate a failing internal component.

Safety