Unplug the main AC power cord completely from the wall. Leave it disconnected for 30 minutes to drain the internal capacitors. Plug it directly into a clean wall outlet (bypass any faulty surge protectors) and turn it on. If the error persists, it is a hardware component failure rather than a firmware issue, requiring professional repair. Conclusion
) on the main unit for at least 10 seconds until the display completely clears and resets to standard demo mode. 3. Severe Error Codes (F61 / F76) Sa-akx200 Firmware