Hi,   recently I plugged the power adapter into the board with the on/off switch at „on“. Heard some sizzling noise, then got some burnt smell, afterwards the printer was dead aside of some glowingof the LEDs.   The step down converter on the board was burnt (had a hole in its case), part „U6“ not far from the Atmega16u2 that does the USB communication. It‘s a Allegro A4403 step-down converter, creates the 5V for the board from 24V.   After replacing it th