1, the speaker display power supply is not normal, resulting in the screen display circuit can not work properly;
2, the speaker connecting line breaks the speaker display does not light;
3, poor contact with the speaker coupler interface, or open welding.
Response to the above situation corresponding solutions:
1, check the speaker inside the monitor power supply circuit, such as damage to components replaced in a timely manner, to ensure that there is a normal operating voltage supply screen display circuit;
2, check the connecting wires and terminals, such as welding or false connection to weld in a timely manner firmly;
3, check the coupler interface, found to be damaged, replaced in a timely manner, such as false connection, timely welding;
3, coupler interface, found damaged Timely replacement, if any false connection, timely welding.
Note: Square dance speakers and multimedia speakers have a display, if the multimedia speakers have problems, but also to check the computer side, whether there is a failure, resulting in the speaker display is not bright.