The power of Changhong TV is turned on, but the remote control does not flash. Why can t I turn it o

1. Magnetization of the TV.

Causes of magnetization of the TV: The TV has been subjected to severe vibration, the degaussing resistance inside the TV is damaged, the magnetization is affected by the magnetic objects next to it, and the deflection coil or color pure magnetic ring in the TV is displaced.

Magnetization of the TV solution: After the TV is subjected to severe vibration, there will be more situations, and it is not certain whether it is the damage of the components or human factors. If the picture can be displayed, except for the halo phenomenon of the screen, everything is normal, then it can be solved with a professional degausser.

If it can't be solved, it is generally that the degaussing element inside is damaged, and the component should be replaced. Be careful not to place magnetic objects next to the TV, as this will have a big impact on the TV. There is also a color system that has not been adjusted well, so you can adjust it yourself.

2. There is no electricity on the whole TV.

The reason for the lack of power of the whole machine: This is a very simple fault, which is mainly caused by the internal power supply and the external power supply of the TV. Generally, the failure rate of the external power supply will be higher.

What is more likely to be damaged are some small components in the machine, which are relatively small, such as: fuses, rectifier bridges, power switches, etc. Another is the failure of the driver board, which causes the whole machine to have no power.

The whole machine has no power to solve: if it is the cause of the power part, it is relatively simple to overhaul, and the problem can be solved after replacing these parts. If it is a fault of the driver board, it is a little more complicated, to check whether the relevant voltage of the power supply is normal, the failure of the driver board will cause the two groups of power supplies to have no output voltage, as long as the voltage is problematic, the driver board must be a problem.

3. There is sound but no image.

Reasons for sound and no picture: The first suspicion is that there is a problem with the high-frequency head, which will directly lead to this situation. There is also the color system is not adjusted to the pair, and the brightness is not adjusted to come out, and the color system is checked by adjusting the remote control.

After the high-frequency head is damaged, there is no image input, so there is no image display on the TV screen, check whether the relevant parameters of the high-frequency head are normal, and then replace. Then there is the adjustment of the color system of the TV, which is also one of the reasons, but this is usually relatively rare.

When the TV is turned off, you can see the light of the TV at the moment of turning it off, and there is a little discharge sound, then it can be concluded that the picture tube of the TV is normal.

Most of the unresponsive boot is due to the failure of the TV remote control, and the current smart TV cannot use the TV without the remote control. You can replace the battery first and then try again,Then use this remote control to open other Changhong products at the same time to try the TV,Or borrow the remote control of the same product to try。 Because the basic functions and basic parameters of the remote control of TV products in the same period are similar, please refer to it.

I analyzed that the problem is likely to be on your remote control, you can try to change the battery of the remote control first, because you said that pressing the remote control does not light up, it should be out of power, and it should be fine if you change the new battery, good luck?

Summary. Hello,Changhong TV power light can't turn on one,Take the picture tube color TV as an example1,The power light is on,Don't turn on,The TV is in standby mode,Press the channel + of the keying button on the chassis panel or the power button on the remote control,If the TV is normal,It will turn on。 2. The power light is on, indicating that the 5V voltage is normal, but the voltage of each key point must also be tested to find the fault

a, +b is equal to the design value, test whether the line driving pin voltage of the decoding block is normal, and the suspicious solder joints of the repair welding line push stage circuit; b, +b is about 80% of the design value, and the line change of the same model is changed; c, +b is less than about 50% of the design value, check and repair the voltage stabilization circuit of the power supply of the machine, must reach +b adjustable, and can be adjusted to the design value; d, the line has been started, the filament is not lit without grating, test whether the supply voltage of the filament is normal. This voltage is 0, check whether the fuse resistance of the filament power supply is damaged or soldered, replaced or repaired; e, the filament is bright without grating, and the image holder is changed; f, the voltage of the three cathodes is too high, test the voltage of the three output pins of R, G and B of the decoding block, which must be left and right, otherwise check the decoding circuit or replace the decoding block.

Hello,Changhong TV power light can't turn on one,Take the picture tube color TV as an example1,The power light is on,Don't turn on,The TV is in standby mode,Press the channel of the keying button on the case panel+or the power button on the remote control,If the TV is normal,It will turn on。 2. The power light is on, indicating that the 5V voltage is normal, but it is also necessary to test the voltage of each key point to find the fault: a, +b is equal to the design value, test whether the line drive foot voltage of the decoder block is normal, and the suspicious solder joints of the repair welding line push circuit; b, +b is about 80% of the design value, and the line change of the same model is changed; c, +b is less than about 50% of the design value, check and repair the voltage stabilization circuit of the power supply of the machine, must reach +b adjustable, and can be adjusted to the design value; d, the line has been started, the filament is not lit without grating, test whether the supply voltage of the filament is normal.

This voltage is 0, check whether the fuse resistance of the filament power supply is damaged or soldered, replaced or repaired; e, the filament is bright without grating, and the image holder is changed; f, the voltage of the three cathodes is too high, test the voltage of the three output pins of R, G and B of the decoding block, and the Zen lift must be left and right, otherwise check the decoding circuit or replace the decoding block.

Second,Take the flat panel color TV as an example1,The power light is on,Don't turn on,The TV is in standby mode,Press the channel of the keying button on the case panel key sensitive to the channel+or the power button on the remote control,If the TV is normal,It will turn on。 2. The power light is on, indicating that the 5V voltage is normal, but it is also necessary to test whether the output voltage of several other groups of the power board is normal to find faults. 3. If the high-voltage plate is faulty, check and replace the high-voltage plate of the same model.

4. The screen is damaged.

Hello,Changhong21Inch TV indicator light on,It means that the TV has been connected to the power supply,The main reasons why it can't be turned on at this time are:

1. If the TV is in standby mode and can't be turned on, you can press the standby button of the following remote control or the channel + - button on the fuselage to wake up the TV.

2. If it still can't be turned on, it means that it is caused by the hardware failure of the TV, including:

1) The power supply system of the TV is faulty, and the power supply is abnormal and cannot be turned on.

2) The high-voltage package failure of the TV causes the screen to be unable to display and cannot be turned on.

3) The picture tube or tube socket of the TV is faulty, and the TV cannot be turned on and the image is not displayed.

4) The internal circuit of the TV is faulty, or the motherboard and other parts are faulty, etc., resulting in the failure to turn on.

3. If it is determined that the TV hardware failure causes the machine to be turned on, it is recommended to contact the after-sales service of the TV to conduct a comprehensive inspection, maintenance and solution of the TV.

What should I do if the Changhong TV can't be turned on,The remote control is also on,The TV just doesn't respond?

Hello dear,What should I do if the Changhong TV can't be turned on,The remote control is also lit,The TV is not respondingThe solution:1、The power plug is not plugged in,The main power switch is not pressed or the connection line is not connected; 2. The remote control is insufficient or the remote control is damaged; 3. The boot does not respond due to internal system failure; 4. The TV is in standby mode; 5. The internal circuit failure of the TV or the failure of other parts, etc. Suggested Treatment:

1. Check whether the power plug is plugged in, whether the main power switch is pressed, whether the connecting wire has been connected, and repair it in time after troubleshooting. 2. If the TV indicator is normal, but the TV can't be turned on, check whether the remote control is low on power, and try whether it can be turned on through the physical buttons on the TV body; It is indeed a problem with the remote control, and it can be replaced or sent for repair. 3. For system reasons, you can try to connect with the computer host and force factory reset before booting and restarting.

It may also be caused by the loss of system files or errors in the TV, in this case, you need to find the after-sales service department or the repair shop master to flash back the software program, which can generally be troubleshooting. 4. If the standby state causes the machine to be turned on, you can press the standby button of the following remote control or the channel + - button on the fuselage to wake up the TV. 5. If it is determined that the TV hardware failure causes the machine to be turned on, it is recommended to contact the after-sales service of the TV to conduct a comprehensive inspection, maintenance and solution of the TV.

6、This phenomenon is usually caused by the loss of system files or errors in the TV,In this case, you need to find the after-sales service department or the repair shop master to brush back the software program,Generally, it can be ruled out。

Hello dear,Reasons and solutions for the power button of Changhong TV that can't turn on the front camera:1、The TV is in standby mode,So it can't be turned on; For example, if the user mistakenly presses the [Late Standby] button of the TV remote control to make the TV in the [Standby state], then you can press the [Standby] button of the remote control again to wake up the TV and return to normal. 2. If it is determined that the TV is not in standby mode, it can basically be judged that the hardware failure causes the machine to not be turned on, such as the TV switch circuit failure, screen cable failure, screen failure, short circuit or failure of other components, etc.; It is recommended to contact the after-sales service of the TV to conduct a comprehensive inspection and warranty of the TV.

The way to judge whether the remote control is damaged: if there is a radio at home, dial to the medium wave, press the remote control, if there is a "beep" sound in the radio, the remote control is basically no problem, and the camera function of the mobile phone can also judge the quality of the remote control. Aim the front of the remote control at the camera of the mobile phone, press the button of the remote control, and the screen of the mobile phone can see the signal emitted by the transmitter tube of the remote control.

This can also be used to conclude that the remote control is good. As for your TV,If the remote control can't be turned on,And the buttons of your home stuffy TV are normal and can't be turned on,It must be a broken TV,Of course, I found that there are many users' TV buttons because they have not been used for a long time and the keys are not in good contact,So you can't turn on the TV。 It is recommended to press the TV button repeatedly, and the TV can be turned on after the sharp trace is well contacted.

If there is no problem with the key contact, the TV must be broken.