New Home › Forum › Mostly Printed CNC – MPCNC › Troubleshooting – MPCNC › The back light on my LED controller won't turn on when I plug it in. › Reply To: The back light on my LED controller won't turn on when I plug it in.
Its probably the ramps board, the traces for the LCD connector are on the very edge of the board and get easily damaged. This is something I only started testing my Ramps for in the last 2 batches of boards. Sorry for the hassle, I sent you an email last night.