A. Power cord problemThe power switch socket is normal, but there is no 220V AC power from the power cord to the AC socket of the all-in-one machine
A: The cable is not plugged tightly or there is a problem with the cable The HDMI cable of the Android board 848 connected to the daughter card driver board is not plugged in tightly, resulting in no signal. There is a signal at the beginning of the bo
A. The overall screen shakes, and the picture is not abnormal. This kind of problem is mostly in AUO's LCD glass. B. The LCD glass does not display, and the logic board still does not display after the replacement. There is no problem with the FPC screen line inspection. Basically, it is the LCD glass problem.
A. Serial port problem The USB touch is normal, but there is no serial port touch when pulling up. Use the touch tool software to check whether the serial port protocol is correct. Compared with the normal machine, the serial port line sequence is corr
Only the backlight is on, but no display A. Line problem Check whether the screen cable is inserted in the wrong position, whether the screen cable is disconnected, whether the FPC cable is inserted tightly, and then unplug it again.
A: The cable is not plugged in tightly or there is a problem with the cable. The HDMI cable of the Android board 848 connected to the daughter card driver board is not plugged in tightly, resulting in no signal. There is a signal just after booting, but there is no signal when entering the windwos system after booting.……
Power board problem 5V/12V short ground Priority is given to measuring whether the 5V 12V on the motherboard side is short-circuited to ground.
What is the problem of the driver board? The indicator light is red, the remote control or buttons cannot be turned on, the program cannot be flashed, the power-on circuit of the driver board is broken, some motherboard problems, replace the driver board, this problem generally occurs in the five-in-one or daughter car……
