I bought a new "RepRap Discount Full Graphic Smart Controller" for my printer. I'm having a hard time installing it. LCD wouldn't turn on and a ticking noise was getting out of the buzzer. It turned out that some have inverted sockets! So I scratched them to be used inverted. LCD turned on, rotary encoder, reset button, SD card and potentiometer and everything work but I get a quite scrambled show on LCD as it's shown in the picture. I tried every possible combination of sockets (inverted and not) I don't know what is wrong!!!