1. First, the external troubleshooting method

1. No power, black screen:

(1) When the above phenomenon occurs in the machine, first check whether the power plug, socket and wiring are loose, and whether the switch (OSD button or remote control) is on;

(2) If the machine is equipped with a timer, it is necessary to check whether the red indicator light and the green indicator light of the timer are lit at the same time. If only the red indicator light is on and the green indicator light is not on, it may be a problem with the clock setting. Just set the clock Correct, (see the instruction manual for details) the fault can be eliminated;

(3) If the machine has a software timing function, check whether the clock setting in the software is correct (please refer to the instruction manual for details).

2. There is image but no sound

See if the sound is set to minimum or silent mode, and reset the volume mode. (Please refer to the instruction manual for details)

If it is offline and there is no sound, first check whether the external sound cable is damaged and whether the connection is correct.

3. Do not read CF card

If the file in the CF card is not created correctly, re-create the LOOP file; if it is an encrypted machine, you need to encrypt the advertisement (for details, please refer to the instruction manual)

4. If the above methods cannot eliminate your fault, you can refer to the internal troubleshooting method in section.

2. Internal troubleshooting method:

1. No power supply (black screen): it may be the built-in power supply is bad or the internal drive board of the machine is bad; troubleshooting method: check whether the power output is normal. bad.

2. Huaping: If there is no display or abnormal display in a certain area on the LCD screen, it is called Huaping; Troubleshooting method: Check whether the signal transmission line inserted on the LCD screen is loose and other phenomena cause poor contact, if this happens Plug the signal cable tightly and fix it, and see if the problem is solved; if not, the LCD screen may be defective.

3. Dark screen (no display on the screen, splash screen): When the LCD screen is always on a black screen, dark screen, splash screen, etc. when playing an advertisement, it is called a dark screen. Remedy: Check whether the power output is normal. If the output voltage of the power supply is unstable (the voltage value does not reach 11~12V), it can be confirmed that the power supply is not good. If the power output is normal, you need to replace the drive board and inverter one by one until the fault is eliminated.

4. If the card is not read, if there is no external fault cause, the decoder board (integrated board) needs to be replaced.

5. No signal: When the power is turned on, the words such as no signal appear on the screen, which is called no signal. Remedy: Check whether the internal video cable and the 5V power cable input to the decoder board are loose. If there is no such phenomenon, you need to replace the decoder board or driver board. After replacement, check whether the fault disappears.

6. After the power is turned on, the screen will automatically play red, green, blue and other pictures in a loop. Remedy: The signal line is loose or the driver board is bad.