Fortunately, the fix is simple and easy to do. You need to run a 5V wire from the power supply directly to the BL touch. Since we are running more connections to the power supply, we might as well run a 12V wire to fix the flickering LED light too.
To access the extra plugs of the power supply you need to remove the back of the LCD screen bracket.
There will be a bunch of unused plugs from the power supply inside. 3.3V(orange), 5V(red), 12V(yellow), ground(black) circuits are available.
Find a 4 pin connector with one set of wires running into it. Plug the white end of the cable into the 4 pin connector.
DO NOT USE A 4 pin connector with 2 sets of wires running into it. It may not be powered.
Run the cables into the electronics box.
The red wire provides 5V for the BL touch. Plug it into the pins shown in the picture. If you had a jumper in these pins, you can remove it.
Before plugging in the yellow and black wires, unplug the green wires from the 12AUX pins. You can remove the green wires from the electronics box.
Plug the yellow and black cables into the RJ-45 connector as shown in the picture.
Tidy up the wires and reattach the back of the LCD screen cover and you will be ready to print.
If you need the wiring harness contact us at email@example.com or submit a support ticket on the website.
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