I do have a defect switch probably with a defective wifi chip - switch was booting, but no wifi / bluetooth.
I would like to replace the chip from a donor board, but I was not able to reball it properly and - surprise - it won’t work and now switch stops booting with the Nintendo Logo.
Are there any good tips how to reball such chips ? I have not seen a stencil for that, but I wonder how this can be done in a good way.
Maybe there is some reball experience with there chips with some tips ?