After powering on the machine, the touchscreen does not boot up and remain black.
- Please power off the machine. You need to check if the breathing LED flashes at the moment you re-power on the machine. There is a breathing LED behind the main controller, and here I offer a video for you to refer to: https://drive.google.com/open?id=1iArDwEYZQCqlhx7vrbDiE2twZoMPLKKq
If the LED does not flash at the moment you power on the machine, the main controller may be defective. Please contact email@example.com for further help.
- If you have a multi meter, please use its Buzz mode to test the connectivity of the power supply cable. Here I offer some images for you to refer to: https://drive.google.com/open?id=1XCezL5Xr7EIB7XNYSkPfo9qpHFlHp9pN
If the multi meter does not ring when you test any of the pins, please contact firstname.lastname@example.org for further help.