Geeetech

It is case n°2.
I don't know how to verify short circuit.
Please send me new mainboard asap!!!

T'es I konw but there is something wrong!!!!!
Before I plug all themistors, the LCD is displaying "68/0, 76/0, 0/0 " and "ultimaker ready".
After I plug all thermistors, the LCD is displaying " 68/0, 76/0, ambiant température/0" and "ultimaker ready"

Please find a solution.

I do not feel hot when I touch any extruders.
Hot bed is working properly.

I loaded the firrmware received and it changed nothing, still high temperature at ambiant room temperature.

Do I need to change my board?

here is the view of my LCD screen when starting the printer, all thermistors are unplugged : http://nsa37.casimages.com/img/2015/06/22/mini_150622120521763129.jpg If I plug the heatbed thermistor, it reaches to around 22°C, room ambiant temperature. if I plug 1 or 2 extruders, temperatures on screen...

here the status at start of the printer, without any thermistors plugged : http://img11.hostingpics.net/pics/585956IMG20150622082412.jpg If i plug the heatbed thermistor, it indicates around 22°C, as the ambiant temperature. I I plug 1 or 2 thermistors from extruders, incorrect temperatures are not ...

Hello, I assembled my printer Prusa I3 C dual extruder, but I have a big problem : without temp sensor from nozzles connected, temperatures indicated on LCD is not 0C but around 70C (for both extruders). For heat bed, no problem, it follow the room temperature (around 22C) I can't print anything ! I...