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 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 s003-001-lg

If the error disappears, one of your speakers or its wire is faulty. If the error persists even with no speakers

: Plug the unit back in with no speakers attached . : Plug the unit back in with no speakers attached

If your device is displaying this code or a related "PROTECT" message, follow these steps to isolate the issue:

The code most commonly refers to a specific identification or reference number within LG's internal support or documentation system, typically associated with troubleshooting audio and sound system protection errors . Understanding "S-Protection" on LG Devices