A10 Part Fan

[danino]

Hi,
after my last print the part the part fan didn‘t turned off.
Even after resetting or rebooting the part fan is always turned on, is runing at 100%.

GCODE M107 is also not working

How can i fix this ?

[danino]

I'm using your 2.0 latest beta.
I already tried the 1.1.8 stock firmware from the Geeetech homepage - same behavior, the part fan is always running

[danino]

I cleared the eeprom after every flash.

I tried to set fan to 0 ( menu ->temperature ?) and stored the settings, same effect
Also tried to clean the eeprom again, fan is always running

[danino]

No, its plugged to the PWN connection

[danino]

Compiled yours with 1.8.8
Stock firmware was a hex file (A10_G04_V1.1.8_3Dtouch_01.hex) from the Geeetech homepage

Something wrong with the breakout board or with the mainboard ?

[danino]

First i have to get a multimeter
I'll check it then and telling you the result

[danino]

So, i checked the voltage at 0 - 24v
on 100% ( 255 in temperature settings ? ) - 24v
But also 24v at any other speed

[danino]

Thanks for your help.

I traced the 24v back to the board.
But finding whtas wrong exceeds my skills.

I think there is a short where the PWM is controlled/set

[Chris81]

Maybe it is a hardware problem like i had:
http://www.geeetech.com/forum/viewtopic ... 98&t=62117

Hard to find, i had some unclean soldering at the extruder pcb.