The TV turns yellow when it s on, and it s okay when it s dark

The grid pressure is not correct or the picture tube is aging.

1.The brightness of the TV is dim and sometimes bright, and if the voltage is unstable by chance, it is often a fault.

2.The fault is not large, caused by the straightening or leakage of the main high-voltage filter element, or the aging of the backlight.

Answer: This fault first measures whether the power supply voltage of the logic board circuit is normal. If the above measurements are normal, then measure all the logic board, DC-DC voltage conversion circuit chip, whether the voltage of each output pin to ground is normal, if it is normal, then the fault is likely to be that the main control chip on the logic board is abnormal, or damaged, etc.

If there is a problem with the signal source input of the TV, the LCD TV will flicker on and off, and you can generally check whether the connection between the TV and cable TV, set-top box or *** machine and other equipment is loose, and it can be reconnected correctly and fixed.

2. There are other signal interference sources around the TV, causing the crystal TV to flicker on and off, you can find out the interference source and move it away; Interference sources such as high-power induction cookers, electric fans, refrigerators, etc.

Possible Causes and Solutions for TV Images Flickering on and Off:

1.There is an abnormality in the backlight plate of the TV screen. Solution: Let a professional master disassemble the machine for inspection and maintenance.

2.There is a source of interference next to the color TV. Solution: Remove electrical appliances and other devices with magnetic field interference next to the TV.

3.The TV circuit is soldered. Solution: First of all, find out the location of the circuit virtual soldering, after finding the position of the TV virtual soldering.

4.The TV has a long service life, and the aging and deterioration of electronic components or excessive dust in the machine will cause the machine to overheat and cause the components to burn.

The main reasons are: 1. It may be caused by the dampness of the socket of the picture tube inside the TV, and the sound may be normal, and there will be some light and shadow. But in this case, the image is relatively blurry, and after a while it will return to its normal state; However, if the dampness is not very serious, it can be displayed normally after a few minutes. 2. The display is aging, it will gradually become darker, jitter, and even a black screen, which can only be simply repaired, if you can't see it, it is better to replace the equipment directly.

Suggested processing method:1、It is recommended to check whether there is a problem with the brightness setting of the TV first,The image is darkened。 You can press the menu button, then find the image settings, select "Brightness Adjustment", and turn up the brightness to try.

2. It is also recommended to check whether there is a problem with the signal source input and program source of the TV, mainly to see its connection line. If it's a problem with the program source, you can switch to another channel and see if it can be restored to normal. 3. If none of the above methods can restore the normal of the TV, it can be determined that the dimming and invisible image caused by the hardware failure of the TV.

For example, the failure of the LCD screen, the failure of the internal circuit and the failure of the motherboard, other parts, etc., in this case, it is recommended to contact a professional maintenance person to check and repair the TV. 4. If it is caused by the problem of moisture in the socket of the picture tube inside the TV, then you can use a hair dryer to blow at the position of the "socket" for about half an hour, and then dry it.

1、Check whether there is a problem with the brightness setting of the TV that causes the brightness to dim,Generally, you can press the menu button of the remote control limb potatodevice,Find the image setting,Press the confirm button to enter to find the brightness setting,Press the confirm button,Then increase the brightness,You can return to normal;

2. Check whether there is a problem with the signal source of the TV that causes the brightness to dim, generally check the connection line, reconnect and fix it; At the same time, it is also necessary to set whether the brightness setting of the ** device or set-top box is wrong, and adjust it again;

If there is a problem with the program source of the TV, the brightness will be dimmed, and it can generally be switched to other program channels**test, or replaced with other discs**;

4. If the brightness is still very dark after the above problems are investigated, it can generally be judged as the hardware failure of the TV set, such as the failure of the internal brightness control circuit, other capacitor faults, the failure of the motherboard and its parts, etc., it is recommended to contact the after-sales service of the TV for comprehensive overhaul and solution.

The above are the reasons and solutions for the TV to suddenly become particularly dark, I hope it will help you!

The TV is very good. Suddenly the brightness dimmed, what's going on.

1.Check whether there is a problem with the brightness setting of the TV that causes the brightness to dim, generally you can press the menu key of the remote control, find the image setting, press the confirm button to enter to find the brightness setting, press the confirm button, and then increase the brightness of the branch, you can return to normal. 2.

Check whether there is a problem with the signal source input of the TV that causes the brightness to dim, generally check the connection line, reconnect it, and fix it; At the same time, it is also necessary to set whether the brightness setting of the ** device or set-top box is wrong, and adjust it again; 3.If there is a problem with the program source of the TV, the brightness will be dimmed, and it can generally be switched to other program channels**test, or replaced with other discs**;

It may be that the background light of the TV is out of the stall and the current problem,You can adjust the background light,Adjust to the brightest,Observe whether the TV screen can be restored,Or if it is not lit, you need to contact the after-sales service for maintenance。

Maintenance method:1、The TV screen is composed of a piece of sodium-free glass and a laminate,When cleaning the screen, you must not clean it with water at will,Clean the screen with a special cleaning solution,Use a special cleaning agent to prolong the service life of the TV;

2. When cleaning, it is best to use cotton and glasses cloth to clean, and the strength should be moderate when wiping with detergent, and do not damage the screen with excessive force;

3. When using detergent, you can spray an appropriate amount of detergent on the screen, wipe it with a cotton cloth, and pay attention to the detergent used must not contain alcohol, which will affect the display of the TV screen. You can't use a hard cloth to wipe the screen with a simple mess, and the hard cloth is easy to scratch the screen and affect the best effect;

4. Be sure to cut off the power supply when cleaning to avoid electric shock. Do not open the shell of the TV when cleaning, there are many circuits in the shell, and it is better not to open it for unprofessional personnel, causing the TV to malfunction. When you see a lot of dust accumulated in the TV case, it is best to contact a professional to clean it up;

5、When cleaning the TV,You can focus on cleaning the position of the back shell of the TV,The back shell will inhale a lot of dust because of static electricity,The accumulation of dust for a long time may affect the use of the TV,Do not clean with water。

Hello dear, I'm glad to answer for you: What's going on with the TV suddenly getting very dark Answer: Dear, general causes and solutions:

1、Check whether there is a problem with the brightness setting of the TV that causes the brightness to dim,Generally, you can press the menu key of the remote control,Find the image setting,Press the confirm button to enter to find the brightness setting,Press the confirm button,Then increase the brightness,You can return to normal; 2. Check whether there is a problem with the signal source input of the TV that causes the brightness to dim, generally check the connection line, reconnect and fix it; At the same time, it is also necessary to set whether the brightness setting of the ** device or set-top box is wrong, and adjust it again; 3. If there is a problem with the program source of the TV, the brightness will be dimmed, and it can generally be switched to other program channels**test, or replaced with other discs**; 4. If the brightness is still very dark after the above problems are investigated, it can generally be judged as the hardware fault of the TV, such as the failure of the internal brightness control circuit, other capacitor faults, the failure of the motherboard and its parts, etc., it is recommended to contact the after-sales service of the TV for comprehensive overhaul and solution.