Treatment of three common problems of high-definition LCD TV

Treatment of three common problems of high-definition LCD TV

The HD LCD TV does not respond after being plugged in during use. First check whether the dedicated power supply is powered on, which is a relatively common problem in actual use. Try removing the back cover to check for loose or loose wires. Test method: Take a multimeter as an example to see if the indicator light is normal. If it is normal, it means that the power supply has electricity, and the problem of power failure is eliminated. Then check whether the decoder board, the advertising machine driver board, the high-voltage bar, the speaker, and the LCD screen are powered on in turn, and see if there is a problem with the accessories and the power is not on.

For example, it will automatically turn off after a period of use or when the HD LCD TV is just turned on. In order to identify whether the menu settings of the high-definition LCD TV are in a state of punctual shutdown; if the machine is short-circuited, the motherboard can be replaced; if the high-voltage bar is not running normally, replace the high-voltage bar; the remote control fails.

There is no sound when the HD LCD TV starts up, and the screen does not display, which may be the indicator light on the front panel is flashing. If there is no sound, you can open the back cover of the HD LCD TV, use a multimeter to check whether the driver board is powered on, and then check whether the speaker cable is connected properly. If there is no picture on the screen, the user can check whether the signal connection between the monitor and the computer is firm, and carefully check whether there is any problem with the interface of the signal line. If there is any damage, the plug should be replaced in time.