New spindle not turning on

I burned a spindle when a couple eccentric nuts wiggled off (now loktited) got a replacement spindle and hooked it up, but still not turning on. Stepper motors are working, but no power seems to be going to the new spindle

I’m sure you’re gonna tell us what kind of spindle you have.?

Have you checked the position of the switch on the power supply? What kind of new spindle do you have, and is there an on/off switch?

I fixed it, it was the PCB… I felt like it was at least partially my fault, but they replaced the spindle and the PCB for free, so I am pretty happy customer!