I've remembered something important!

Check the two main fuses beside the main contactor.
First, when they are bolted on, hold the fuse body and try to shake it a bit. See are the connection contacts still soldered to the fuse body.

Do not measure their continuity when they are on the machine.

Very often I have found that the connecting contacts break from the fuse body. If so, easy fix. Find a good soldering iron.

If this is not the case check the power supply to the main contactor. Don't disconnect the wires from it. The controller could recognize that as an fault. Measure the power somewhere on that diode you will found. These contacts are shared with those where the wires are connected, just from the other side (instalation choice).

If you still don't have power supply to the main contactor after you have check all above... to bad man, you have an wiring/connector issue.

Let us know what did you find...