Machine: K40 that originally came with M2 Nano
I recently installed a laser board in my K40 and at first everything worked properly with Lightburn.
Today I went to use the K40 and the laser no longer fires under control from Lightburn. It does fire with the K40 laser test button. Laser current is adjusted to 14ma. When I enter G1 X100 S1 F600 at the console the Fire status LED on the Laserboard does light up but the laser does not actually fire. I attached a multi meter to the red/black wires shown in the attached in the photo and it reads open circuit, even when the fire LED is active. I’m assuming that there must be a FET in there that should close the circuit to fire the laser and it’s blown. Please advise as to how I can get this working again.