What s going on with Changhong s computer not opening

This Nima, you can tell me a specific situation, child.

Possible causes and solutions for Changhong TV to not turn on after suddenly shutting down:

1. The set-top box has been working for too long, and the poor heat dissipation effect will cause the set-top box to crash.

Solution: Disconnect the power supply of the set-top box, let the set-top box cool down for a period of time and then turn it on.

2. The software of the set-top box occupies a large amount of memory, causing a crash (for example, there are many programs running), and the set-top box does not output images and sounds.

Solution: Clear the memory frequently and close the unused applications in time.

4. The set-top box is not turned on, resulting in no image and sound output on the TV.

Solution: Open the set-top box.

5. The backlight plate of the TV screen is broken or other special circumstances.

6. The screen drive circuit inside the TV has a fault caused by virtual welding.

7. The switch circuit of the AD board in the TV is burned out.

Solution:Point 5-7 above needs to be disassembled by a professional master for inspection and maintenance,If the TV is still under warranty,Send it to the TV brand repair shop to warrant。

1. It may be that the current power has been cut off, or it may be that the power plug is loose and there is a power outage, etc., which leads to shutdown; If it is loose, it can be solved by re-inserting and fixing; 2. It may be that you accidentally pressed the power button of the remote control to put the TV in standby mode, you can try to press the power button of the remote control to solve the problem; 3. If none of the above reasons are true, it may be that the TV cannot be turned on due to hardware failure, such as power switch failure, internal circuit short circuit or open circuit, motherboard and other component failure, etc.; It is recommended to contact the after-sales service of the TV for maintenance.

It may be that the power cord is loose,If you are sure that there is no problem with the power cord,It may be that there is a problem with the TV,You need to contact the manufacturer to come to the door for testing。

If the indicator light does not light up after turning on the switch, check whether the power socket is normal, whether the plug is plugged in properly, and whether the switch is normal. If all of the above is normal, then the TV power strip is faulty. The short circuit burned the insurance.

Turn on the switching power indicator and it doesn't light up, check if there is power in the power socket? Whether the plug and socket are loose or not, the contact is poor. If the light is on, there may be a problem with the main control board or power board. It is recommended to have a professional maintenance personnel to inspect the repair. FYI.

In the case that Changhong TV can't be turned on,It should be a faulty TV,You need to take it for repair。

The main reasons are:

1. The power plug is not plugged in, the main power switch is not pressed or the connecting wire 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 of the blind stove 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 returns to 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 of the TV or the grinding of the world, which is caused by an error,In this case, you need to find the after-sales service department or the repair shop master to brush back the software program,Generally, you can troubleshoot。

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 of 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, the fault can be eliminated。

You canClick on the link below, or call the official **Make an appointment with a professional maintenance master in the same city to come to your door for inspection and maintenance.

First,There is a problem with the voltage of the TV,At this time, we need to check which lift and leak to check if there is a problem,If there is a problem, you need to solve it。 Second, if you find that the light is on but cannot be started, then there is a problem with the circuit, and if we don't understand, we should contact a professional to solve it. Third, if there is a problem with the light-emitting diode, if the positive and negative potential difference is too large, the voltage after voltage stabilization will be too low, and it is necessary to pay attention to this problem.

The reasons why Changhong TV can't be turned on are as follows:1、Maybe 220V electricity is not available,Or the voltage is seriously undervoltage,Check whether there is220V electricity,Is the voltage enough。 2. The power socket may be damaged, try another one.

3、It may be that there is a problem with the power cord of the TV,Try another one,You can also use a multimeter to measure whether it is good。 4. It may be that the internal power supply of the TV is bad, such as filter circuits, fuses and other components. Send it for repair.

5. It may be caused by the chaos of the on/off program, try to restore the factory settings. 6. It may be that the TV is operating incorrectly, and it is locked or the screen is locked. Consult the instruction manual or consult the manufacturer's after-sales technology to unlock it.

7. It may be that there is a problem with the internal display circuit of the TV, please repair it with a professional maintenance master. 8. It may be that the remote control is bad or the power switch is broken.

1.First of all, you should ** whether the indicator light is on, whether it is because the power supply is loose, or whether the electric source is broken and your TV cannot be started. If it is because of this problem, you can first disconnect the switching power supply from the load and identify it after connecting the load switch.

2.It is also judged that there is a kind of failure to turn on because the internal temperature is too low, and if it has been in the case of too low temperature, it will not be able to turn on. At this time, you need to make sure that the finger digging light is on normally, take the hair dryer and blow it on the back of the TV for some time, and then press the on/off button directly to turn on the TV.

There may also be a problem with the voltage,If the TV wants to meet the boot instruction, it must reach the corresponding voltage,If the voltage is not stable, the TV may not be turned on for protection。 If the indicator light is not on at all, then the problem is not external, it is likely that there is a problem internally. It is very likely that the power strip wiring inside is broken, or the fuse inside is burned, these problems can not be solved by themselves, if it is determined that the TV is an internal problem, do not act rashly, it is best to send the TV to a special institution for repair.

Summary. 1、Voltage problemThe premise of the standby instruction of the TV is that its working voltage must meet5V or,The voltage must be provided by the power supply,The premise of the light is on, first of all, ensure that the CPU working voltage is available,And most of the protection circuits are the use of the CPU's standby circuit to achieve protection。 Second、The power supply part and the circuit light are not lit,It is obvious that the power supply part of Changhong TV is not working,There is also a situation where the light is not turned on,The latter situation involves more circuits,You must have a certain understanding and understanding of the circuit。

3. Internal and external protection circuitsGenerally, if the positive and negative potential difference of the light-emitting diode inside the optical lotus is larger, the lower the output voltage of the power supply after voltage stabilization. Based on this, we can find a way to reduce the positive potential of the light-emitting diode or even directly connect it to ground, and distinguish between the internal and external protection circuit problems of the power supply in a short time under the premise of reducing the electrical air voltage.

1、Voltage problemThe premise of the TVCPU's standby command is that its working voltage must meet5V or,The voltage must be provided by the power supply,Under the premise that the light is on, we must first ensure that the CPU working voltage is available,And most of the protection circuits are the use of the CPU's standby circuit to achieve protection。 Second, the power supply part and the circuit light are not lit,It is obvious that the power supply part of Changhong TV is not working in the early days,There is also a situation where the light is not turned on,The latter situation involves more circuits,You must have a certain understanding and understanding of the circuit。 3. Internal and external protection circuitsGenerally, if the positive and negative potential difference of the light-emitting diode inside the optical lotus is larger, the lower the output voltage of the power supply after voltage stabilization.

Based on this, we can find a way to reduce the positive potential of the light-emitting diode or even directly connect it to ground, and distinguish between the internal and external protection circuit problems of the power supply in a short time under the premise of reducing the electrical air voltage.

Excuse me, but please go into more detail?

1、Voltage problemThe premise of the TVCPU's standby command is that its working voltage must meet5V or,The voltage must be provided by the power supply,Under the premise that the light is on, we must first ensure that the CPU working voltage is available,And most of the protection circuits are the use of the CPU's standby circuit to achieve protection。 Second, the power supply part and the circuit light are not lit,It is obvious that the power supply part of Changhong TV is not working in the early days,There is also a situation where the light is not turned on,The latter situation involves more circuits,You must have a certain understanding and understanding of the circuit。 3. Internal and external protection circuitsGenerally, if the positive and negative potential difference of the light-emitting diode inside the optical lotus is larger, the lower the output voltage of the power supply after voltage stabilization.

Based on this, we can find a way to reduce the positive potential of the light-emitting diode or even directly connect it to ground, and distinguish between the internal and external protection circuit problems of the power supply in a short time under the premise of reducing the electrical air voltage.