I just built up my Prusa i3 kit but only shows that creepy screen is just on.(attached)

I got a spare of ramps 1.4 board and a set of lcd sreen.

I've tried to changed each of one but problem is same.

Maybe the problem is arduino 2560 board but is there anything to control? heck I don't know.

Please check this out.

you need to edit your firmware, most people use marlin:

[github.com]

then they use arduino software to open, edit and flash it to their arduino:

[www.arduino.cc]

search the topic on this board and a bunch of threads will come up with more details.

Before you try that look for the potentiometer and turn down the contrast on your lcd board just in case to see if that helps otherwise follow my instructions above.

Thanks really! the firmware was the matter.