The problem is this, the 12468 LCD just shines bright white and and ear piercing shreak comes from the tiny speaker.
I've uploaded Marlin to it after making adjustments such as setting the motherboard to 33,set the extruders and steppers to none, and decommenting the smart lcd controller. The PSU works, and the Arduino mega says everything is fine and it uploads without a problem.
It's a Robotale RepRapDiscount Smart Graphic Controller.
Suggestions please.
