The Changhong TV screen is red with a white slash.

The red opto-amp transistor has broken down and shorted out.

Reasons: 1. The vertical streaks may be due to connection problems and static electricity at the signal input end inside the TFT panel. If the signal of the TV is interfered with and causes horizontal streaks, such as the use of high-power electrical appliances that cause voltage instability, you only need to find out the source of interference and eliminate it; In this case, you can first check whether there are new high-power electrical products near the TV, turn it off, and then see if the vertical stripes of the TV have disappeared.

2. The line formed by static electricity is usually a single one, which does not look so thick. The thick wire is usually caused by a short circuit, and the input of the TFT internal short circuit signal is short-circuited. If there is a problem with the TV signal source or program source, the horizontal stripes appear, mainly check whether the connection line is loose, or whether there is a problem with the current ** program source.

If the cable is loose, it can be fixed and reconnected with a different cable. If it is a problem with the program source, you can switch to another program channel**.

3. The use environment is too humid, which will have a certain impact on the line at the input end and produce line defects. But it's not the only cause. If it is determined that it is not a signal source or a program source, it may be caused by the failure of the TV hardware, mainly due to the failure of the screen cable or poor contact, the failure of the display screen, the failure of the internal circuit, etc., which needs to be repaired by contacting the after-sales service of the TV to solve it.

LCD TV has vertical stripes,Generally, it is the LCD panel or related auxiliary circuit failure,In this case, you can only find a special person to detect and repair,If it is an LCD panel problem,It is generally better to change the TV directly。

1. Vertical stripes appear on the TV screen, which may be a connection problem with static electricity or the internal signal input end of the TFT panel, you can check whether there are high-power electrical appliances around, turn it off and turn it on again to see if the problem is solved;

2. Disassemble the back cover of the TV to see if the screen cable is in poor contact or broken, and reconnect;

3. Report to the manufacturer or find a regular service outlet to make an appointment for door-to-door maintenance.

Above, look!

If this vertical stripe appears on the Changhong TV screen,You can just quit,Re-enter it again in the future,It should be OK。

<> Changhong TV screen is red,There are five possible reasons,That is, the connection signal line between the graphics card and the display is in poor contact、Strong magnetism。

There are five situations: field interference, wrong color temperature setting parameters of the display, video amplifier failure, and picture tube touching the pole. When the latter three situations occur on the TV, it is recommended to contact professional repair or after-sales maintenance directly.

The main cause of color shift failures in televisions.

Clause. 1. The connection signal cable between the graphics card and the display is not in good contact. You can replug the VGA connector when the power is off, and carefully check whether the pins are bent or deformed, and whether the signal cable is broken.

Clause. Second, if only a certain part of the screen, especially the four corners of the screen, appear color cast, it is generally caused by strong magnetic field interference. At this time, you can check whether there are strong magnetic devices around the display, such as speakers, high-power power transformers, etc., and try to move these devices away.

Clause. 3. Some monitors have a color temperature setting function, if there is an error in the setting, it will also cause a color shift failure, but the actual performance of this color shift is that the whole screen is biased towards a background color. This problem can be solved by simply readjusting the color temperature parameters correctly.

If the color shift doesn't get any better no matter how much you adjust the color temperature parameter, the problem is the chroma inside the display.

The output transistor is "soft-broken", or biased potentiometer.

Poor contact. In this case, it is better to send the faulty display to a professional maintenance personnel for processing.

Clause. Fourth, TVs and monitors rely on electron beams to scan the corresponding phosphors on the screen.

Produces a kaleidoscopic array of colors. Control the three primary colors of the electron gun: red, yellow, and blue.

The amplification circuit is called the video amplifier circuit. If one of the circuits fails, there will be a bias to one color on the screen. The most common is the opto-amplification transistor. Damage. Clause.

Fifth, the picture tube touches the pole, which is manifested as lack of color, defocus, the screen is too bright or too dark, and there is a scan line. If the cathode of the CRT collides with the gate, the beam current of the corresponding electrode will increase, and the grating will become the monochromatic grating corresponding to the electrode, causing the brightness to run out of control and there will be a serious backsweep line.

Problems with the screen or logic board. Check the voltage of each part first!

It should be caused by the aging of the blanking circuit capacitance.

Hello,I'm glad about your problem,Normally,The appearance of the red vertical hole on the screen may be caused by problems with the power interface and power stripe of the TV,It can also be caused by a problem with the control board of the display,Or a problem with the power cord。 Solution:1

Please check whether the power connector is connected to the power strip and make sure that the power connector is not damaged; 2.Check if the power cord is damaged, and if so, replace it; 3.Check whether the control board of the display is damaged, if so, please replace the leakage; 4.

If there are no problems with the above, it is recommended that you take your TV to a professional repair center for testing.

Summary. Jianghu Baixiao will answer for you: when this kind of problem occurs, the magnetization factor should be considered first. The abnormal color of the color TV image is that the picture tube is magnetized, and the main reason for this is.

1. You may have moved your location while the TV was working. Second, the color TV degaussing circuit fails (the degaussing resistance is open or virtual welding, the degaussing coil plug is loose, and the degaussing coil is open) Third, the TV is too close to the magnetic field source (the TV should be far away from the speaker and other magnetic objects) The above three situations can cause the picture tube to be magnetized, and the solution to the problem of the picture tube being magnetized is (provided that the degaussing circuit is intact) First, it can be turned off and turned on after 30 minutes, which can generally eliminate the magnetization phenomenon.

2. If the CRT is seriously magnetized, a magnet can be used to manually degauss the CRT screen under the condition of booting (this method can only be carried out under the premise that the CRT is seriously magnetized).

Half of the upper and lower parts of the Changhong TV screen have different colors.

Jianghu Baixiao will answer for you: when this kind of problem occurs, the magnetization factor should be considered first. The abnormal color of the color TV image is that the picture tube is magnetized, and the main reason for this is.

1. You may have moved your location while the TV was working. Second, the color TV degaussing circuit fails (the degaussing resistance is open or virtual welding, the degaussing coil plug is loose, and the degaussing coil is open) Third, the TV is too close to the magnetic field source (the TV should be far away from the speaker and other magnetic objects) The above three situations can cause the picture tube to be magnetized, which way to solve the problem of the picture tube being magnetized (provided that the degaussing circuit is intact) 1. Li Xianglu can be turned off and turned on after 30 minutes, which can generally eliminate the magnetization phenomenon.

2. If the picture tube is seriously magnetized, it can be used to manually degauss the picture tube screen with a magnet in the case of boot (this method can only be carried out under the premise that the picture tube is seriously magnetized).

It is a night crystal panel.

Hello,You first check whether the TV has turned on the dynamic comparison demonstration effect of wild hunger fruit。 Before ruling out hardware problems,Check the TV setting problem Song late,Enter the menu settings,If you can't find the option,Directly restore the factory to observe whether the phenomenon is eliminated,Then make the next step to judge and overhaul!

The factory settings are restored, and the top and bottom are still half <>

The upper and lower colors or multiple colors caused by the instability of the connection line appear. Check whether there is a problem with the simplification of the cables, now the cables are all using HDMI input, reconnect, or reconnect the port, for example, the HDMI1 used before is now changed to HDMI2 access, and the remote control selects the signal source HDMI2 to see if it is normal. If there is a problem with the connection line, it is best to find after-sales or professional maintenance personnel, and it is best not to disassemble it.

It's not the signal source, it's half up and down when there is no signal.

There are colors up and down, but they are different.

I changed the backlight 3 months ago, is the backlight broken?

Hello, the preliminary judgment is a mechanical failure, not a setting problem, you need to open and check the accessories in order to further repair.