The TV looks at the black screen, and the indicator light is not on, what to do

Monitor black screen workaround:

1. If the monitor is not used for a long time, the monitor will automatically turn into sleep energy-saving mode and the screen will be black.

Solution: Take win7 as an example.

1) Right-click on the blank space of the desktop and select "Personalization" in the menu to open the personalization settings dialog box.

2) Click the red box in the above picture to select "Screen Saver" to enter the screen saver settings dialog box.

3) Set the screen saver to "None". And click "Change Power Settings" to enter the power settings dialog box.

4) Click "Change Plan" to enter the change settings dialog box.

5) In the blue box selection, click the drop-down triangle, select "Never", and then "Save Changes" to exit.

After setting, the monitor will no longer automatically go black.

Second, the display failure causes a black screen.

On the internal power board of the display, the capacitance of the power supply output part is aging, leaking, bulging, and failing. When the display is first turned on, because the capacitor is not completely necrotic, in a short time, the power supply is normal, so it can be displayed normally. After working for a period of time, the power supply is seriously insufficient, causing the backlight of the LCD monitor to go out, causing the display to go black.

Solution: Send the professional display repair point for repair, and the components will be damaged even worse, and the cost will be about 30---50 yuan.

Solution: Replug, install and fix the signal cable of the monitor. If the fault persists, the signal cable can be replaced.

Fourth, the performance of the graphics card is faulty and unstable, resulting in a black screen of the display.

Solution: 1. Test after updating the graphics card driver, if the fault persists, directly replace the graphics card for testing.

Note: If you are using an integrated graphics card, you can install a discrete graphics card for testing. Or directly replace the motherboard with integrated graphics for testing.

5. The motherboard performance is faulty and the operation is unstable, resulting in a black screen of the display. Solution: Directly replace the motherboard for testing.

There are many reasons: 1. TV power failure; 2. Disassemble the TV case to check the power fuse, and find that it has been fused, so you can judge that the power supply circuit or load circuit is seriously short-circuited; 3. The power supply regulator circuit of the driver board in the TV is faulty.

Suggested treatment.

1. Unplug the TV power board F2 and the main circuit wrench plug-in CN2607, replace the fuse tube and power on the test machine, and the fuse will not burn again;

2. Measure whether the B pole voltage of the line tube has a normal negative left and right voltage, if there is no voltage, it means that before the line tube, the oscillation circuit and the line push circuit are not working normally, so focus on checking the line of oscillation circuit components;

3. Check the power switch of the TV, Dayu confirms that the socket is not powered by the power supply, and if it is not, the light is generally broken because the power board is broken;

4. There is a problem with the signal processing circuit of the post-stage, and a part of the circuit is damaged, which causes the load to be increased, and the 5V voltage is pulled very low.

5. If the voltage of the image tube is abnormal, it is necessary to check whether the power supply of 200V is abnormal, and if the power supply voltage is abnormal, you need to purchase a voltage regulator.

In the case of virtual welding of the line, it is necessary to re-weld the virtual welding place of the line, and adjust the situation of the open circuit.

Hello, I am glad to serve you and give you the following answers: The TV display light is on but the black screen is a common TV failure, which may be caused by hardware failure or software problems inside the TV. Reason:

1.Hardware failure inside the TV: The hardware inside the TV may malfunction, causing the TV to not work properly, resulting in the TV display light turning on but the screen black.

2.Software issues: There may be a problem with the software of the TV, causing the TV to not work properly, resulting in a situation where the TV display light is on but the screen is black.

Workaround:1Check the hardware inside the TV:

Check the hardware inside the TV source, such as the power board, display board, motherboard, etc., to see if there are any damaged parts, if there are, you need to replace new parts. 2.Check your TV's software

Check your TV's software to see if there is any corrupted software, and if it is, you will need to reinstall new software. 3.Reset the TV:

If the above two methods do not solve the problem, you can try to reset the TV, resetting the TV can restore the factory settings of the TV, thus solving the problem that the TV display light is wide and bright but the screen is black. Personal Tips:1

If the TV has a TV display light on but a black screen, you should first check the hardware and software inside the TV to see if there are any damaged parts or software, if so, you need to replace new parts or reinstall new software. 2.If neither of the above methods solves the problem, then.

Check whether the line is working normally, if there is a short circuit in the line, it will cause the TV to be black, and it needs to be replaced or repaired; Check whether the power supply circuit is faulty, if there is a fault, the voltage is unstable, and the TV will have a black screen.

Common Reasons Why TV Display Lights Up But Black Screen And Solutions:

1. Open resistor: The voltage is abnormal, resulting in an open resistor, so the TV display light is on but the screen is black, the user contacts professional maintenance personnel for replacement and maintenance, so that the voltage is restored, and the resistance is no longer open, so that the TV can return to normal work.

2. The output line does not work: the output line fails due to abnormal voltage, and the TV will also fail, resulting in the TV display light being on but the screen is black.

3、Excessive currentAnswer:The current is too large or the power supply cannot operate normally due to convection protection,The final result is that the TV fails,In a black screen,The user needs to replace a protective socket,In order to avoid the problem of excessive current,Let the TV no longer have a black screen。

4. Protection circuit start: Because the circuit imitation belt fault makes the protection circuit start, the operation of the TV will be affected, and the display light is on but the screen is black, and professional maintenance is required to solve the problem.

Hello dear,There are many reasons why the TV display light is on but the black screen causes the black screen,There are three aspects worth mentioning,First:power board problem,The power board with immovable load causes the backlight board to be unable to drive,Resulting in a black screen,Because the backlight needs about 1000V AC voltage,But the power supply itself is an inverter process,So,If the power of the source key is not enough,Even if the backlight board is good,It will also cause the failure of the black screen。 Second:

The problem of the backlight board, the backlight board needs to invert the DC 12 or 24V voltage sent by the electric marketing source board into an AC driving voltage of about 1000V, if the backlight board has a problem, it will also be black. Third: the problem of the screen itself, the backlight inside the screen is driven by several sets of TTFT lamps, if one of the groups or one of the lamps is broken or welded, it will also cause the problem of black screen.

Yours is still able to take a look, after a black screen, the problem may be on the power strip. Generally, the maintenance fee of 32-inch LCD TV is about 260 yuan, and the original cost is calculated separately. Hope mine can help you; Once again, I wish you good health and a good mood! 