Screen blurred or lines appeared after some time

Failure cause:

1. SD card or USB flash disk is not formatted into FAT32

2. Screen input wire loose or damaged, replace it



Screen blink frequently

1. Check if there’s magnet field interference.

2. Check if the voltage is stable

3. Check the video card



Black screen (No video and audio output)

1. Press the power button after connected to the power

2. Disconnect from power for 10 seconds and reboot

3. Check the power wire

4. Check if the power supply is functioning by multimeter



Black screen (No video output)

Failure cause:

1. Inverter module is not connected to the mainboard.

2. Inverter module damaged.

3. LCD screen damaged.




Black screen after a sudden power lost

Solution:

1. Disconnect from power for 3 minutes and reboot.

2. Decoding board damaged.

3. Power supply damaged.