For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
I got my first dead MBA 2020 A2179 and I don't have schematics.
MacBook looks perfect, no water, no drop, nothing bad on motherboard. Customer said he was working and then sudden death. Now, when pressing power button, nothing on the screen, no fans.. but the little LED near CPU on Fan...