LG K51 Motherboard Swap 

I switched the motherboards on two of the same exact phones but they have different carriers now I just get one white light

I have 2k51 phones one has T-Mobile and the other one is Metro the Metro one is blacklisted but my T-Mobile screen is broke so can I take the insides like the motherboard out of the other phone which is a Metro phone and put my motherboard in there and will that work