Geeetech

OK I think I have uploaded Marlin the to board. I have enabled the LCD

#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER

https://www.amazon.co.uk/gp/product/B00L72FAZU

When I plug the USB cable in the LCD doesn't light up or do anything, If I turn the control dial a yellow LED flashes on the board.

I have LCD to Exp 1 and SD Card to Exp 2 on the LCD board.

IF I sawp the cables around the only way I can get anything is when I put a SD card in, the screen back light comes on ad the buzzer sounds.

MontyFlange wrote:OK I think I have uploaded Marlin the to board. I have enabled the LCD

#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER

https://www.amazon.co.uk/gp/product/B00L72FAZU

When I plug the USB cable in the LCD doesn't light up or do anything, If I turn the control dial a yellow LED flashes on the board.

I have LCD to Exp 1 and SD Card to Exp 2 on the LCD board.

IF I sawp the cables around the only way I can get anything is when I put a SD card in, the screen back light comes on ad the buzzer sounds.

Hi,
What board are you using now?Have you uploaded the firmware successfully?What did the LCD12864 display when you turned on the power?Attach a video to show me how everything goes plz.
And you can refer the following article to double check the wiring plugs:
http://www.geeetech.com/forum/viewtopic ... =10#p29507

Yer exactly the same problem. I just sanded off the tab on the cable end and turned it upside down.