This actually saved me on the Azteeg X3. The extruder motor was acting eratic and would quit after only a few seconds of extrusion. Finally turns out that the power for the steppers runs through the expansion board, and the soldering job (i guess) on the 2x2 is crap. I removed the expansion board and wired in the stepper power via AUX IN. All is well now with my extruder.by qboney - RAMPS Electronics
Hi, I'm having a bad time as well. On the fan terminals (FAN+ and FAN-), i get nothing, no matter what. On the terminals (FAN+ and a common ground, not the fan ground), i measure 0 to around +4.8 volts. (depending on PWM output in Repetier 0.83 or 0.91). See attached photo. But when i connect a fan to it, i get less than 1 volt, and no fan spinning.... Any ideas? Thanks in advance, Quintby qboney - Sanguino(lolu)