Geeetech

The voltage from my power supply is 12.29V.
I connected 4 motors.
The hotbed started to heat up and got to about 60 C and then I turned on the hot end and then it burnt. Now there is no continuity to hot end or hotbed.

Everything was connected correctly. I tested polarity with a multimeter. I was able to connect with USB and move the motors with no problem. As soon as I turn on power to the hotbed and hot end, it started to heat up but then I smelled burning and it stopped heating up. I unplugged everything and ...

My order # is 20130922200754291. I bought this as a backup and never plugged it in until 5 days ago when my old board stopped working.

I do not know what you mean by "show me your connection with the board and the use steps". What do you want me to show you?

Thanks

I purchased a motherboard (Printrboard rev. D) from you. http://www.geeetech.com/new-version-reprap-printerboard-reprap-electronics-sets-p-653.html

The first time I used it, the channel connecting power to mosfet burnt within the first 5 seconds. The board is now junk. I read on some forums that a ...