Black screen after TV flashing is a typical fault, and the cause of the fault is complicated. Let's see what's going on!
After the TV screen flashes, it turns black. There may be something wrong with the signal source input of the TV. You can check whether there is a problem with the cable between the TV and cable TV, set-top box or DVD player. If it is loose, it can be restored to normal by reconnecting it correctly and fixing it correctly.
If the TV signal source input is normal, there is basically something wrong with the TV hardware, which needs a comprehensive overhaul and can be solved.
Causes of hardware failure of black screen after LCD TV flashing;
1. The cable connection between the LCD screen and the driver board may be loose, or the screen driver circuit inside the LCD TV may be welded.
2. The circuit part of the LCD screen, especially the driver chip, is slightly damaged, and the control driver board of the LCD TV also has problems. It may be that the circuit on the AD board that controls the high-voltage board switch in the TV set is burnt out.
3. The backlight of TV screen is broken or other special circumstances.
4. First of all, it may be caused by abnormal power supply circuit, which shows that when the panel is pressed, the buttons do not respond and the indicator light does not light up. One possibility is that there is something wrong with the input stage of the power supply circuit; Another possibility is that the load of 5V is aggravated.
When the TV screen flashes and turns black, it is necessary to check that the set-top box is not turned on, resulting in no image output on the TV. Just turn on the set-top box.
Like CRT TV, LCD screen will age or burn out due to long-term work, especially when the same picture is displayed for a long time. When you are not using the TV, you need to turn off the display.
The following describes the failure of the black screen after the TV screen flashes. What needs to be reminded here is that if you don't know where the problem lies, it is recommended to find professional maintenance personnel to repair it, so as to avoid irreversible damage to the machine caused by your misoperation.