There is an electric current sound behind my Philips LCD TV, it doesn t matter

The effect is good, and the sound when it is turned off should be the sound of the power prep power. The sound when connected to the power supply is in the normal range, and there will also be a sound when the plug is just unplugged, which is the sound of thermal expansion and contraction of the capacitor. It's better to unplug it, first, to save electricity, and second, it's good for the TV!

There is a current sound, but the sound is not right when it is loud, and it generally does not affect the TV **.

There is no way, the repair station does not think that there is a problem, the current is loud.

And that machine, the effect is still good, compared to other TVs.

I bought it in July, and I changed the screen for you, and the communication sound is not normal, and it is likely that the MUTE circuit on your board is broken, or the amplifier is a little faulty.

Now there are a lot of software problems manufacturers can't solve this situation like you said Some faults can't be repaired and there are no sounds when you boot up There is a picture and no sound You try to turn the backlight up and listen to whether the sound has changed But what you said about shutdown and sound This is quite overbearing The same problem is repaired three times in a year There should be a saying that you can change the machine should generally have sound But you are shut down and there is sound.

It definitely matters! How can a good TV have current sound,You have to first determine whether it is really the sound from the TV,If so,There should be a short circuit to emit the current sound,Since you haven't done it well after repairing it twice,Then there may be a quality problem with the TV itself。。。

It should be transformer noise, so it shouldn't be a big problem.

I think it should be a problem.

Go to the merchant and ask, there is generally no sound.

If there is a problem with the sound circuit, if the current is small, there is no problem, and if the current is loud, it will be investigated

Remember.

It is possible that the lamp is not installed, and this sound is generally emitted by a high-voltage coil, a large filter electrolytic capacitor, or a lamp ignition.

You first pull out the outer wheat.

Try the computer out of it.

There are also computer speakers that are also unplugged.

There may be interference.

What brand of LCD are you using? How long has it been?

Now the power cord of the display is basically plugged into the power socket alone, so who has to do it is not zhidao, as for the display has a larger electrical reflux sound, that is the manufacturer in order to save costs, the use of automatic switching.

Frequency of scans. The mechanical switch switches the scan frequency, so this type of monitor will hear a click sound when the mechanical switch is switched.

It has something to do with your display, it's your sound card driver that has a problem, or the game itself!

Switching power supply design problems, the internal switching power supply of the display in the no-load state, due to the discontinuous output current, due to the requirements of voltage stabilization, resulting in the switching tube periodicity (the cycle is relatively long, the frequency is much smaller than the switching frequency of the switching power supply) is turned off, the frequency may be 1 time per second or higher, should not be 50Hz power frequency AC sound!

Personally, I think that this kind of problem should be a common problem, and it has a certain relationship with the power switch transformer inside the display, so it is recommended to go directly to change one!

I also have this problem with the first machine of my old computer.。。。 But it's CRT,,, the choke in it is broken... So in this way, your liquid crystal ... I don't know how, maybe there is a bit of a problem with the power supply of the panel.

It may be caused by dampness.

Go out and find a professional repair.

The same goes for my Philips. I thought something was wrong. Outcome.. It's just that the plug isn't plugged in properly.

My monitor is not Philips', if there is an electric sound, you can take it to the warranty (it should not be out of warranty).

I don't know how long you've been buying, but you first see if your neighbor's house has a situation with you. You change the brightness a little. See if the sound changes.

If there are changes. Your TV can be sold after sale, but it may not be able to replace it for you. This is not a quality problem, and besides, you have used it for some days.

That's true. If you're tougher, you'll almost get it. Ha ha.

I think your situation seems to be the cause of the set-top box.

There is a way to solve it, the power cord is three-ended, you unplug the middle head, it's OK, if you don't worry, you can buy a wire to try, that kind of power cord, the market has sold it, and the power cord used in the rice cooker is the same, the power cord on the plug table has three heads, and the middle head can be unplugged.

Abnormal.

The current of the TV may be caused by the abnormal power supply circuit,It is manifested as no response to the panel buttons,The indicator light is not on,Generally, it is a combustion fuse or a failure of the voltage stabilization chip,Some machines are built-in switching power supplies,Output two groups of power supplies,One of them is5V,For signal processing,The other group is12VProvide high-voltage board point backlight,If the switching power supply part of the circuit fails, it may lead to the failure of both groups of power supplies。

It's normal to have a slight point, you turn off the volume and listen to it. Because there's a power supply in it, there's always a little sound when it's working.

1、It is normal for Skyworth LCD TV to have current sound behind it,Because the TV is in the process of powering up,The internal hardware and circuits need to continuously transmit current,Therefore, it is normal to have current sound。

2. There is an electric current sound inside the TV, generally as long as the TV can work normally, you don't need to pay attention to it, just continue to use it; If the current sound is large and affects the normal use of the TV, it may be that the internal hardware of the TV is faulty, and it is necessary to contact the after-sales service of the TV to conduct a comprehensive inspection and maintenance of the TV to solve the problem.

Normally, current sound is mostly found in devices with coils, such as speakers.

It's not normal.。。 It shouldn't be audible.

Hello, there should be a bit of a problem with the power supply.

When the display is black, the power consumption is the maximum, so it should be that the greater the power consumption, the louder the sound, which is logical.

Since it's a new one, it's best to go and change it to see it, it may be a single problem.

This sound is the sound of the current, the black screen consumes the most power, so the sound is also the largest, the sound size is the industry standard, under normal circumstances, it is normal to not hear it from the inside of the lamp line 30cm, if you feel that the sound is loud, you can send it for repair. However, the problem of LED screen should be relatively rare.

In fact, if this kind of lamp has some slight current sound, it should be considered normal, but if the impact of the current sound is too large and abnormal, it is recommended that LZ still send it to the maintenance point to let the professional give a look, Philips's after-sales service is still very good, the maintenance point can be found on the official website, it is very convenient, or you can first call ** consultation to see it, and the general lamps MS has a one-year warranty, the quality of Philips has always been good, I hope LZ can quickly solve it.

Check the voltage! Unplug the LED power adapter and listen to if it's a power issue! Philips Beijing first-class ** business Philips store No. 301, 3rd floor, Fleet Building Materials and Home Furnishing Building, North Third Ring Road, Beijing.

The headphones of the SA28 are not very good, and they do not have the ability to fully express the effect of the SA28. It is recommended to change to Sennheiser's MX360, the effect is absolutely beyond your imagination! ~

Of course, it is good to be able to change, there is noise if you don't connect the signal line, it must be a problem with the audio, and there is noise in each channel, indicating that the fault is in the public circuit part, go to the front or power supply. 1. Estimate which wire of the wire control switch is disturbed due to the failure of the grounding shield. 2. Poor power rectification filtering.