Bricked device, new logic board

Hello everyone!

A few months ago I bricked my Asus Z500M (non-LTE version) and now I'm not even able to connect it to my pc (stuck on boot logo and no download or recovery mode) and flash the raw software through the Asus Flash Tool.

I was wondering which one could be the best option:

1)Replace the logic board (100€), the biggest concern here is that I don't know if I will be able to use this tablet even with a different serial number/IMEI.

2)"Repair" the eMMC by reprogramming it (I have no idea of how it can be done or which tools are needed)