Hi,
I have fixed a few tools and was considering purchasing a non-working Makita Angle Grinder like the DGA506. Has anyone been successful in repairing the stator controller board:
https://www.partshopdirect.co.uk/makita-stator-complete-p629201-7/
with something like this from AliExpress:
https://www.aliexpress.com/item/1005005888627983.html
There are a few options available it seems. Getting to the original board covered with black epoxy seems like a mission impossible, or maybe I am wrong? I'm wondering about other people's experiences with such plans

Thank you in advance
