Prusa i3 control board problem

[Bighuete]

Hi there
I just set up a Prusa i3 Pro X. After mounting to go it on the LCD does not turn on. I connected the USB and LCD lights heated bed. The engines do not move and does not heat the extruder. When unplugging usb it turns off.

I checked the output of the power supply and gives 12-13V. But voltages in checkpoints and engines gives 0V.

Does anyone know how to solve the problem?

Thank you

[Mark]

how's your LED lights, do they all come on? you can check this link here for them:
http://www.geeetech.com/forum/viewtopic ... 19&t=17039
And how's your PSU wirings? do you have some pictures of the wirings on board and PSU?

[Bighuete]

Hello Mark

The bed LED is lighted continuous, extruder LED is off.

01.jpg (262.17 KiB) Viewed 5867 times

The USB LED also works when I connect the computer.

02.jpg (175.71 KiB) Viewed 5867 times

The LED below the connection lights when heated bed. When heated gives 1.5 V and when it does not 12.31V.

03.jpg (171.11 KiB) Viewed 5867 times

Extruder heated LED don´t work, and the extruder only raise 1-2ºC
The fuse give 12.31V
Extruder gives resistance 3.9Ω
The resistance of the bed gives 1.2Ω

The PSU wire.

04.jpg (146.22 KiB) Viewed 5867 times

Regards

[Mark]

the LED for the hotend is not on, then I think the fuse might be dead, you can remove the hotend fuse and plug the 15A fuse into the socket, see if the LED will come on or not, if it comes on with the heatbed fuse, then the hotend fuse is dead, need to replace it.