: Unplug all speaker wires from the back of the unit. Check for any stray copper strands that might be touching other terminals or the metal chassis.

: Plug the unit back in with no speakers attached .

: Ensure the unit has enough space for airflow. Overheating can sometimes trigger protection modes to prevent a fire hazard.

: Turn off the unit and unplug it from the wall for at least 60 seconds to clear temporary logic errors.

: 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.

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.