Back backlight won't work after screen swap

So I recently had to replace my P9 lite's (vns-l52) LCD after a bad fall. Got a new panel and frame but unfortunately that display was ment for a P9 (Eva-l19). Purchased the right one this time but the backlight won't go on after replacing it!

Did some digging and found a lot saying it's the mother board and not the display at fault since placing a wrong display may have blown something on the board itself.

My question, is getting a new p9 lite motherboard and pairing it with the new p9 lite display a good idea or will it also damage the new board cause the new Board is a P9 lite (VNS-L23) while the screen if I remember correctly, is from a (vns-l52) P9 lite as stated by the seller.