Heat Bed and LCD Issues

[tuncangin]

Yeap. I hope

[Xadamx1]

I tried, it to the point where there weren't any nuts or bolts on it at all, no luck. Thanks for the suggestion though!

[Xadamx1]

Just replaced the Ramps 1.4 board, and that fixed every problem I had.

[midiman310]

Just replaced the Ramps 1.4 board, and that fixed every problem I had.

I just opened up a brand new Geeetech RAMPS board the LCD2004 display had random characters on the screen also. Moved it back to my Acryllic I3 and LCD was fine. I have the RAMPS mounted to an old "Italian" Arduino MEGA2560 I had from my LED light show left over. Went to trace the problem. Ohm'd out all the LCD input linews and the lines ohm'd out fine. Re-tried, still random characters on the screen. Decided to re-flow all the input pins that come from the MEGA to the LCD Adapter card on the RAMPS board. Here are the pins listed in the picture diagram.

ramp_lcd.jpg (129.52 KiB) Viewed 6700 times

After re-flow the LCD display now works perfectly:

IMG_3829.jpg (125.24 KiB) Viewed 6700 times

Using the LCD for my scratch built Rostock printer with motors/bearings/most electronics using Geeetech parts.