Hi again, I have updated the pictures folder with some close ups of what I can read: https://bit.ly/2zyEtXj

I'm knowledgeable enough to identify if some component is part of a PWM module or not.

Someone has suggested me this board is not controlled by PWM but by phase control.

At this point, and to avoid the risk of ending up with a lathe without a controller, I'm thinking about alternatives, ie, starting from scratch with a new board.

What options are there for a 220V 750W DC motor with reverse/neutral operation and RPM control and readout?

Thanks