Hello, I bought the MPCNC Burly a few years ago, and for the past few months, the Mini Rambo board has been taking a very long time to start up. Often it takes more than 10 minutes for the screen to turn on, sometimes longer, or not at all, since I don’t always have time to wait. Once the screen is on, everything works normally. But I’m never sure if the green LED on the Mini Rambo will light up, to allow me to work. Do I need to replace a component, a fuse, a capacitor…? Or the board itself? Can you help me?
First thing I would check is the power supply. Either use a multimeter on it or unplug all the steppers from the mini-rambo and see if it starts up faster.