I just built my Lead 1515 and got it to home once. The problem is now that the Y1 motor does not exicute a directional command and go in the same direction. If I input Y+ it will go to the -*Y- and if I push the Y+ again it will go the Y- and just goes back and forth. I have tripple checked the wiring and did a contanuity test on the - and + coil wires in the motor and both were good.
See symptoms in section 1 of docs:blackbox-x32:faq-identify-motor-coils [OpenBuilds Documentation] - tell tale sign of only 3 of the 4 motor wires making contact throughout Symptoms still show an issue, you'll have to check a 4th time then: maybe terminal just loose enough that under current load it fails, continuity check just a couple mA. Or intermittend in sense of moving the machine tugs just right on the loose connection causing it to lose one of the 4 wires then, but while testing, at rest, barely touching terminal measures good just by luck Video confirms the usual symptoms too: loose connection in one or more wires.
