LG 42LM3400-ZA 

42LM3400-ZA 
Chassis LD21B / LC21B 
main EAX6431740411.01 G4_L_TU123 
panel LC420DUN 
T-CON 32/37/42/47/55 FHD TM120 Ver 0.3 p / n 6870C-0401C 
24C08 firmware T-Con 

EEPROM / FLASH: 24C08 t-con 
PDP / LCD / OLED Panel: LC420DUN