LG TV UF 7709 Mainboard Compatibility

[EUWest]

Hey Guys,
I have a broken Mainboard (EAX66208202) in my LG TV UF7709. There is an Option to buy cheap following Mainboard (EAX67688702) from an SK 9905.
Does anyone one, if this will be fit in my TV? Are they compatibly?
Can i swap These Mainboards without Problems?