S003-001-lg 〈Edge〉

If the error persists even with no speakers connected, the issue is likely an in the amplifier board that requires professional repair.

: Turn off the unit and unplug it from the wall for at least 60 seconds to clear temporary logic errors. s003-001-lg

: 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. If the error persists even with no speakers

: In LG's error nomenclature, "S" often relates to "Sound" or "Speaker" subsystems, distinguishing it from power or thermal protection. Helpful Troubleshooting Steps s003-001-lg

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