Geeetech

Fixed!

The MonoPrice i3 uses a special cable for the extruder motor.
The end is cut off where it attaches to the Melzi baord.
The cable is terminated on a special header.

The GT2650 uses the standard cable header block.

I ordered a new cable to use for the extruder from a well known importer ...

Additional info:

Min Temp - Yes I checked the min temp setting 170 c
I checked cold - no motor movement
I checked @ 190c - bump one way then back and forth

Marlin Settings for Extruder (one extruder only)
Extruders 1
Default_ Axis_Steps_Per_Unit 100
Default_Max_Feedrate 25 (also tested 50)
Default ...

Found Problem - (For others)

The issue was over pushing the motors.
The board and driver chips were new and I had not adjusted the VRef voltage.
The motors would run till hot , pause cool and restart.
Adjusted the Vref as noted on YouTube and the problem went away.

Now for other issues... another ...

I am currently working on a project to upgrade a MonoPrice i3 V2 with a GT2560 A+ board.
The issue I have is that the extruder motor "tick tocks" Moves one gear forward then goes back - back and forth as long as the extruder is supposed to be driving the filament.

Background:
I have been updating a ...

I am currently replacing a Melzi board in my MonoPrice V2 with a Geetech GT2560. I plan to use Marlin vs Repieter.
I have successfully loaded the firmware with settings based on a load for Wanhao.
I have LCD and control.
When I set to print, the nozzle moves around the perimeter loop of the print ...