While holding the button, plug the TV back into the power supply.
P75-2841v6.0 Firmware: The Complete Guide to Troubleshooting and Installation The P75-2841v6.0 P75-2841v6.0 Firmware
+-----------------------------------+ | UMOD TOOR DETREVNIM | <-- "Mirror Mode" is mismatched | | with the panel layout config. +-----------------------------------+ While holding the button, plug the TV back