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1.The LCD controller board input power voltage must be 12Vdc (except some boards which have marked need to use 5Vdc), the power current is recommended to be 2A or greater than 2A. If you not sure, please confirm on the purchase link page, or confirm with the seller. (Important: If using a wrong power adapter, the board maybe be burned, so please take care of this.)
T1: LCD screen shows a black screen after power on.

S1: 1. Please confirm whether the screen backlight cable is connected to the booster board(inverter board). If not, connect it and power again.

S1: 2. Do some exchange test: Change the input signal to test; Change power adapter to test; Change the signal source to test; Change the signal cable to test; Change the LCD screen to test. And so on.
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