I have a mega with a sainsmart 12864 lcd and I also have a due with a radds lcd. Both are displaying same unusual behavior. Both have a display that show x y z and temp but when you click on encoder to go to marlin menu nothing happens. If I click on the encoder multiple times while I power up the Arduinos I will hear a click and get to the info screen then nothing happens. menu is frozen. I did try to find topics relating to issue but unsuccessful. Any suggestions would be appreciated.
ps I did hook up my sainsmart lcd and ramp 1.4 to a friends mega and the menu showed and encoder clicked since I originally thought I had a bad lcd
and I also removed all software (marlin and Arduino) to start fresh and its the same.