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 https://reprap.org/forum/read.php?4,178750,178750#msg-178750 Sun, 09 Aug 2026 15:48:29 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,178750,186362#msg-186362 https://reprap.org/forum/read.php?4,178750,186362#msg-186362 mfuqua Reprappers Wed, 20 Feb 2013 23:02:49 -0500 https://reprap.org/forum/read.php?4,178750,186343#msg-186343 https://reprap.org/forum/read.php?4,178750,186343#msg-186343 picapau Reprappers Wed, 20 Feb 2013 20:04:27 -0500 https://reprap.org/forum/read.php?4,178750,178750#msg-178750 https://reprap.org/forum/read.php?4,178750,178750#msg-178750
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]]> mfuqua Reprappers Wed, 23 Jan 2013 14:03:28 -0500