Testing motion control without thermistors installed

Hello everyone,
little problem -
in Configuration.h I have changed both #define TEMP_SENSOR_0 and #define TEMP_SENSOR_1 from being -1 to 0
this made the x,y,z motors move without thermistors installed .
BUT the extruder motor doesn't move (only makes sound that it wants to move)

The LCD panel indicates a temperature of 499 for the hot end.

someone got idea what can be done ?

Check eeprom values for steps/acceleration etc.

With 499°C the firmware should mark the sensor as defect and prevent extruding if you haven't changed the defect values to wide outside the range.

With M302 S1 you can enable cold extrusion so you can test at room temperature or just by faking a sensor with 100kohm resistor.

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Hi
I connected the thermistors (both of them - T0,T1 ) and still the extruder motor doesn't move

as you can see in the link - [www.youtube.com] (the sound is the exdruder's struggling.. )

any idea what is wrong ?

[www.youtube.com]

What I see is that you are using Marlin not Repetier so you can forget anything I said. Maybe just wrong wiring. Can happen if only one coil gets current in motor. Otherwise try a marlin forum if it is firmware related.

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Thanks !