Why do I connect all the interfaces, the screen is black.
Answer: 1. Please confirm whether the backlit LED lights are in series or parallel.2. Please confirm whether the data defined by each interface has been successfully connected.
Please confirm the backlight first (the voltage in series is 3.2V* lamp number, the current is unchanged.The current in parallel is 20MA* lamp number, the voltage remains the same). Please use A multimeter to measure the A and K pins on the FPC display screen after power on to check the voltage and current.
3. After the hardware check is OK, you can check the software Settings.
