Common faults and maintenance of VGA matrix system

1) When the projection of the peripheral device connected to the VGA matrix has ghost images, if the projector has ghost images, it is generally not a problem with the host computer. It may be that the projector is not adjusted properly, and the corresponding buttons of the projector should be adjusted.

2) When the color is lost or there is no video signal output, the VGA connector may not be connected properly.

3) When the remote control cannot control the VGA matrix:

a. It may be that the battery is dead, please replace the battery;

b. The remote control may be broken, please repair it.

4) When the serial port (generally refers to the computer serial port) cannot control the VGA matrix, see if the software serial port corresponds to the serial port of the connected device.

5) If the VGA matrix input and output signals can be switched, but there is no bb sound, the internal buzzer of the host may be broken, please send it to a professional for repair.

6) When the VGA matrix is ​​switched, the buzzer sounds, but there is no corresponding projection output:

a. See if there is a signal at the corresponding input. (It can be detected by oscilloscope or multimeter) If there is no signal input, the input wiring may be broken, or the connector is loose, and the wiring can be replaced.

b. See if there is a signal at the corresponding output. (It can be tested with an oscilloscope or a multimeter) If there is no signal output, it may be that the output wiring is broken, or the connector is loose, and the wiring can be replaced.

c. Both of the above two situations will not work after replacement. The host may be faulty. Please send it to a professional for repair.

7) If the power light is off and there is no display on the LCD and there is no response to the operation, the power supply may be abnormal.

8) The output image is disturbed, and the input and output devices may not be grounded.

9) The buzzer has bb call, the LCD display is normal, the serial port returns, but there is no projection image output or no audio output
a. Maybe the RCA head is loose, just replace it.

b. The wiring may be short-circuited, just replace it.

c. The internal wire of the wiring may be broken, just replace it.

10) If the buttons, serial port and remote control of the VGA matrix panel cannot be controlled, the host may be damaged, please send it to a professional for repair.