So from Pronterface I get good readings from the thermsistor it shows 25C. I turn the extruder on and the red led for the extruder comes on the ramps board. I can read 5v on the gate leg of the mosfet but read no voltage on the Drain or source legs. I have 12v on both the inputs for the ramps. I read 12v through both of the fuses. The heat bed d8 is fucntioning properly. I thought it was a bad mosfet but if that was the case shouldnt I be able to read 12v on the source leg?

I'm stuck so any thoughts are suggestions appreciated.

I purchased the ramps areleady built and it fuctions properly (i.e motors endstops thermsisters and heat bed) except for D9 and d10.

Help please!!!!

matt

Hey mfuqua, have You solved your problem? I have the same :/

It was a problem with the board. The company I bought it from replaced it.