Changhong LCD TV 42 inches can sometimes be turned on, sometimes can t be what the reason

This kind of problem is generally false welding is more common, but it is not excluded that the power start is not good, it is best to find Changhong after-sales diagnosis.

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Changhong TV42What is going on if it can't be turned on。

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First of all, confirm whether there is electricity,Then see if the power indicator of the TV is on,If these are no problems,Then it may be a remote control or operation problem,As well as possible hardware problems,There are the following situations:

1. Confirm whether there is a problem with the plug or socket. After confirming that there is electricity, check whether the plug or socket is connected properly and whether the TV is connected to the power. Under normal circumstances, the TV does not turn on because of the power supply.

2. Confirm whether the TV switch is turned on. Since many TVs are operated by remote control, even if the TV switch is turned on, the power light of the TV is still red, and the remote control can be used to turn on the TV, sometimes the remote control has a problem, and the TV cannot be turned on.

3. The status of the network set-top box. Since many TVs now use network set-top boxes to control signals, if the set-top box is in standby state, the TV cannot be turned on, so it is necessary to confirm whether the remote control of the set-top box is turned off the TV.

4. Hardware problems. If the above situations are ruled out, then there may be a problem with the hardware of the TV, including the power cable in the TV, or the circuit board. At this time, it is also necessary to find a professional to overhaul the equipment, and it is best not to disassemble and inspect it yourself.

Changhong42LCD TV does not turn on,What is the problem that the switch is normal only 3 times。

Hello,Changhong42LCD TV needs to be switched on and off 3 times to turn on normally,There are the following problems:1.Power issues:

The TV cannot be turned on at once due to a poor contact of the power cord plug or a problem with the power adapter. 2.Motherboard issues:

Some components on the TV's motherboard are faulty or aged, causing the TV to not turn on properly. 3.Software Regimental Questions:

The internal software of the TV has an error or freezes, causing the stove to collapse and fail to turn on. It is recommended that you first check that the power cord is in good contact and then try to factory reset your TV. If the above steps do not solve the problem, then professional maintenance personnel may be required to inspect and repair.

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Summary. Hello dear, happy to answer your <>

Changhong42LCD TV does not turn on,Need to switch on and off 3 times to start normally may be one of the following problems:1Power issues:

This may be caused by an unstable power supply** or a damaged power module. You can try to replace the power cord or contact a professional service person to service and replace the power module. 2.

Battery issues: If your TV has a built-in battery, it's probably due to a low battery or an aging battery. You can try replacing the battery or connecting the TV to a stable power source.

3.Switch problem: It may be that the TV's switch button is malfunctioning, causing it to need to be pressed multiple times to start properly.

You can try cleaning the switch button or contact a professional service person to service and replace the switch button.

Changhong42LCD TV does not turn on,What is the problem that the switch is normal only 3 times。

Hello dear, happy to answer your <>

Changhong42LCD TV does not turn on,Need to switch on and off 3 times to start normally may be one of the following problems:1Power issues:

This may be caused by an unstable power supply** or a damaged power module. You can try to replace the power cord or contact a professional service person to service and replace the power module. 2.

Battery issues: If your TV has a built-in battery, it's probably due to a low battery or an aging battery. You can try replacing the battery or connecting the TV to a stable power source.

3.The problem of turning off the dry bush slag: It may be that the TV's switch button is malfunctioning, resulting in the need to press it multiple times to start normally.

You can try to clean the switch button quietly or contact a professional maintenance person to repair and replace the switch button.

Dear, the following are related extensions, I hope it will be helpful to you<>

If none of the above methods solve the problem, you can also consider the following possible reasons for the extension:4TV Motherboard Issues:

It may be that the motherboard of the TV is faulty, causing the TV to not boot properly. In this case, it is recommended that you contact a professional service personnel for overhaul and replacement of the motherboard. 5.

Software problem Wu dismantling answer:It may be that the software of the TV is abnormal,Causing the TV to fail to start normally。 You can try to reset or upgrade the software, if the problem persists, it is recommended to contact the Changhong after-sales service cavity wisdom center or professional maintenance personnel for further maintenance and repair.

6.Other hardware issues: In addition to the possible causes mentioned above, there could also be other hardware components that are malfunctioning, such as TV screens, circuit boards, etc.

If Changhong42LCD TV does not turn on,Need to switch 3 times to start normally,It is recommended that you try some simple solutions first,Such as replacing the power cord、Clean the switch button, etc。 <>

Summary. Hello, Changhong 42 LCD TV needs to be switched on and off three times to turn on normally, which may be caused by the following reasons:1

Power supply issues: It could be that the power supply** is unstable or faulty. Try checking that the power cord is plugged in tightly and that the power outlet is working properly.

If the problem persists, you may need to contact a professional service person to inspect the power module and have it repaired or replaced.

Changhong42LCD TV does not turn on,What is the problem that the switch is normal only 3 times。

Hello Lunqi,Changhong 42 LCD rock dress TV needs to be switched on and off three times to turn on normally, which may be caused by the following reasons:1Power issues:

It could be that the power supply** is unstable or faulty. Try checking that the power cord is plugged in tightly and that the power outlet is working properly. If the problem persists, it is possible that the tung stove needs to contact a professional maintenance personnel to check the power module and repair or replace it.

2.TV motherboard problem: The circuit on the TV motherboard may be out of worn.

This may require a professional repairer to inspect and may require the motherboard to be replaced. 3.Control Panel Mess Issues:

The TV's control panel may be faulty, causing boot issues. Try cleaning the keys on your TV's control panel and check for damaged or loose connections.

Summary. First, to this fault first check, the switching power supply circuit board pad is not a virtual soldering or open soldering components, if carefully arranged to determine that are normal, then it may be the internal problem of the machine, on this problem, the answer is as follows: First of all, measure whether the voltage of each group at the output end of the switching power supply circuit is normal.

If the above measurement is normal, it means that the switching power supply circuit is not faulty, otherwise it is still a problem of the switching power supply circuit. At this time, it is to measure whether the B pole voltage of the line tube has a normal negative voltage, if there is no such voltage, it means that the line oscillation circuit and the line push circuit are not working normally, so focus on checking it, and try the line of oscillating circuit components.

Changhong LCD TV sometimes can't be turned on, and sometimes it can be turned on.

In the pro,I'm happy to answer your questions,Changhong LCD TV sometimes can't be turned on,Sometimes it can be turned on。

It may be caused by system problems,It is recommended to try to restore the factory settings first,If you can't restore it, flash or contact after-sales,Flash can find relevant tutorial posts in the smart TV network forumps:In addition, if you don't understand anything, you can go to"znds smart TV forum" to find relevant information,You can also ask for help from management or orange renter。

First, to this fault first check, the switching power supply circuit board pad is not a virtual soldering or open soldering components, if carefully arranged to determine that are normal, then it may be that there is a problem inside the machine, on this problem, the answer to Qi Dong is as follows: First of all, measure whether the voltage of each group at the output end of the switching power supply circuit is normal. If the above measurement is normal, it means that the switching power supply circuit is not faulty, otherwise it is still a problem of the switching power supply circuit.

That is, the above measurement is normal, but the power-on test machine is still not good, at this time, it is in the measurement, whether the line B pole fibrillation pressure is the master whether there is a normal negative voltage, if there is no such voltage, it means that the line of oscillation circuit, line of push circuit, are not working normally, so focus on checking, the line of oscillation circuit components try.

Is it a problem with the power supply part?

It's better to check it out.

Can changing a power motherboard solve the problem.

If you're not sure, let the master fix it.

Don't get worse and worse.

Summary. 1. After turning on the TV, there is no image, it is likely that there is a problem with the high-frequency head and the middle release. According to the working principle of the TV, there is no image for this reason, and the picture tube can display the machine setting menu, with audio, **interface, and can **external tone** signal.

2. There is a normal TV program sound, no picture. This shows that the high-frequency, mid-frequency and accompanying sound circuits are in normal working condition, and there is no line output circuit without short-circuit faults. If the screen can display the TV settings menu.

Why is my 32-inch Changhong TV turned on like this?

Hello dear! Internal power protection for the TV. The reason may be the failure of the light source lighting power supply or the power supply of the whole machine itself. Ask a professional to carry out the repair.

1. After turning on the TV, there is no image of Yanxiao, it is likely that there is a problem with the high-frequency head and medium magnifying stove. According to the working principle of the TV, this reason leads to no image, and the picture tube can be imitated to display the machine setting menu, with sound, **interface, and can **external sound** signal. 2. There is a normal TV program sound, no picture.

This shows that the high-frequency, mid-frequency and accompanying sound circuits are in normal working condition, and there is no line output circuit without short-circuit faults. If the screen can display the TV settings menu.

It may be the following reasons that cause Changhong42Inch LCD TV can not be turned on, there is a prompt sound but does not display the image: the power cord connected to the TV is loose or damaged. Please check that the power cord is securely connected and that there are no broken or broken spots.

The signal cable connected to the TV is loose or damaged. Please check that the signal cable is firmly connected to the tremor, and that there are no broken or damaged parts of the signal. The TV is set up with the wrong signal source.

It is recommended to follow the above steps to check one by one,If the problem is still not solved,You can contact the after-sales service department of the TV or professional maintenance personnel for help。