So in preparation to install a fan mount for printing PLA, I was testing voltages output by the pins on the RAMBO.
I guess I accidentally shorted the pins on FAN 2 (shown in the figure below) and heard a pop.
After plugging the fan back in and flipping the power switch the fan just ‘twitches’ and LED 8 (shown in the schematic below), pulsates in sequence with the fan.
Testing revealed that the internal diode of the IRLML6346TRPbF (Q8 in the schematic) is blown.
Does anyone know or can think of a work-around for this?
Does anyone know how to re-purpose FAN 1 to function as FAN 2 did?
*note: section in question is in the ‘MOSFETS’ portion of the schematic
I don’t really possess the equipment needed to replace the MOSFET itself.