For official repair support or to find a local service center, you can use the LG Support Locator to book a technician. How to Fix S Protection on LG Sound Systems | Expert Q&A
When an LG audio system (such as a soundbar, home theater, or receiver) displays "S-PROTECT" or "S-PROTECTION," it indicates that the unit's internal protection circuit has been triggered to prevent damage to the amplifier. s003-001-lg
If the error persists even with no speakers connected, the issue is likely an in the amplifier board that requires professional repair. For official repair support or to find a
: Turn off the unit and unplug it from the wall for at least 60 seconds to clear temporary logic errors. : Turn off the unit and unplug it
: In LG's error nomenclature, "S" often relates to "Sound" or "Speaker" subsystems, distinguishing it from power or thermal protection. Helpful Troubleshooting Steps
: Ensure the unit has enough space for airflow. Overheating can sometimes trigger protection modes to prevent a fire hazard.
: This usually occurs due to an internal short circuit . This can be caused by: Frayed or touching speaker wires. A faulty speaker drawing too much power. Internal component failure within the amplifier circuit.