I'm going to guess that you have an X9D Plus?? If so, the pricing for the boards:
Had you recently made any changes to the firmware? Will it come up in boot loader mode? Check the state of charge on the battery?
Typically, the repair will be the price of the parts and around $30 for labor give or take.
FrSky Taranis Plus Main Board
Replacement main board for the Taranis Plus transmitter by FrSky. Does include the LCD screen, plug and play, no soldering required.
alofthobbies.com
FrSky Taranis Plus Backboard + internal XJT module
Replacement Backboard and internal XJT module for the Taranis Plus transmitter by FrSky.
alofthobbies.com
Had you recently made any changes to the firmware? Will it come up in boot loader mode? Check the state of charge on the battery?
Typically, the repair will be the price of the parts and around $30 for labor give or take.