mks gen 2z v1.1

hey, im kinda new to building 3d printers. i just got my sunhokey prusa i3 i really good printer for the prise i would say. there is just one problem my mks board went up in smoke and i wonder if thats a common thing or if i just was unlucky with my board. i printed 4 or 5 suksessfully prints before the mks board went up in smoke. the first sign was that i lost heat in the print head, after some thinking i restarted the board and started heating up the print head thats when the board started smoking and melted a small hole in the acryllic plastic of my printer.

You have a shortcut somewhere in your extruder heater-assembly. Can be on the mks board or the wires from the heater element have contact with the hotend body...

After you´ve found the problem, you could switch over to the heater1 FET and change the firmware accordingly.

Here is a snip from reprap-wiki that might be interesting for you then:

Comment utiliser Heather 1 D7 pour E1 

dans {Pins.h} 

remplacer le "-1 " en "7" 



#if MB(RAMPS_13_EF || MB(AZTEEG_X3)
   #define HEATER_1_PIN       -1
 #else
   #define HEATER_1_PIN       9    // EXTRUDER 2 (FAN On Sprinter)
 #endif


OU 
#if MOTHERBOARD == 33 || MOTHERBOARD == 67
   #define HEATER_1_PIN       -1
 #else
   #define HEATER_1_PIN       9    // EXTRUDER 2 (FAN On Sprinter)
 #endif

Edited 1 time(s). Last edit at 06/08/2015 03:14AM by o_lampe.

thanks for the advice going to try later on. but i think its weird since the heater came assembled