If the picture is upside down, you may need a different version of the SIS231 P83 software or access to the Service Menu (usually Menu + 1147 ).
Often caused by a mismatch between firmware and the LCD panel. Download SIS231 P83 CHRANI DLED40A01 Backup Dump rar
Firmware flashing involves handling sensitive electronics. If you are not experienced, consider contacting a professional service center to avoid fatal electrical shocks or permanent hardware damage. Common Issues Solved by This Dump Stuck on Standby: Red light stays on and won't turn green. Logo Loop: TV shows the brand logo and then restarts. If the picture is upside down, you may
Sites like Monitor.net.ru are excellent for troubleshooting specific board issues like backlight current adjustment or boot failures. How to Install the Firmware If the picture is upside down