high pitched whine lcd monitors supplier

Hi. What you are experiencing is a form of coil whine. Try messing with the monitor settings in the included monitor on screen controls. You mentioned adjusting brightness on a previous monitor. Did you have any luck adjusting the brightness on this monitor?

It looks like your monitor has multiple inputs and an external power brick. I would try switching to a different hdmi port and moving the power brick as far away as possible. It may be your power brick that is emitting that harsh noise, and not the monitor itself. Try another power brisk. You can try listening to the power brick when unplugged from the monitor to see if it emitts that specific noise. This is not the most scientific test, as the brick is not under load when unplugged from the monitor, so it may not produce a coil whine at all. If it does, find a replacement / RMA from samsung.

The high pitched noise from many LCD monitors when their brightness is reduced can be utterly distracting. Here’s a simple workaround that can work quite well with most monitors for many users. Also, please participate in our Quiet / Noisy Monitor Survey!

Many computer users have run into the issue of whining LCD monitors. Usually, it does not occur when the monitor is set to full brightness, which is usually too bright for most users. The natural response is to turn the brightness down using the monitor’s controls. That’s when the monitor can start to emit some high frequency tones, which are described most often as buzzing or whining. The noise usually gets worse the more the screen is dimmed.

It can be piercing and annoying enough to overcome even relatively high ambient noise. If you’ve spent the time and effort to study the information on SPCR and managed to achieve super-quiet performance in your computer, this whine can be absolutely frustrating. In short, it can drive people crazy.

The source of the problem appears to be components in the electronic circuit which controls the brightness of the CFL bulb that lights most LCD monitors. Most likely, this is some form of PWM (pulse width modulation) circuit, a very useful tool that, alas, can have negative side effects. For example, while it allows a fan to start reliably at unusually low speed, an improperly matched PWM control circuit can cause a DC fan to emit more clicking, buzzing and chattering noise as it is slowed. A similar effect may be happening with the monitor CFL bulbs. To modify this electronic circuit in order to reduce or eliminate the whining noise is an impossible challenge for most users.

This workaround will obviously not work for LCD monitors that whine even at full brightness. A replacement with another sample or model is recommended in such cases. We have not tried replacing the CFL bulb of afflicted LCD monitors; it probably is not the cause, however. Interestingly, the whine of CRT monitors can usually be reduced by setting its internal brightness control down. It’s also not clear whether any LED-lit monitors suffer the same problem. CAUTION: If you are an image professional (or advanced amateur) who relies on color accuracy, this may not be a good solution. For details, please see the discussion in the forum linked below. If you find the color degradation with this approach to be serious, you may also want to try a combination of both monitor hardware brightness control and video driver software brightness reduction. With a decent monitor, for typical computer uage, you should be able to find a happy compromise between image integrity and aural peace.

Please help us help you! The SPCR staff and lab can only examine and report on a finite number of products. Reader contributions can expand our reach tremendously. Everyone viewing this page has a monitor. In the forum discussion linked above, please post the make and model of your monitor and whether it whines. If it does, describe the degree, nature and conditions. As this log grows, everyone can benefit by using it as a quick reference. When it gets big enough, we will turn it to a table with multiple models, samples and ratings, and keep it uptodate. It will become a highly useful resource for quiet monitor seekers.

We continue to explore the issue of high frequency tonal noise from many computer components. As we approach ever lower noise levels, this electronic whining often becomes critical; in “normal” (read: noisy) computers, it is masked by the noise of fans and hard drives. Power supplies, motherboards and video cards are the other main sources of electronic whine. The whine is often associated with power components, usually capacitors and coils. Poor circuit design is probably at fault; electronic resonances in circuits can cause the components to vibrate or ring, and the whining we hear is directly related to that ringing.

Both new and old computers can experience what’s called “coil whine,” which is a high-pitched noise that comes from the computer. It’s easy to jump to the conclusion that the noise is a sign of major computer failure or that something is broken, loose, or about to explode.

Fortunately, coil whine is normal behavior. When you hear a high-pitched sound from your computer, there"s no reason to assume that your computer is toast, that your hard drive is about to die, or anything like that.

In fact, this high-pitched noise is really nothing more than an annoyance. If you can bear the noise, you don’t need to do anything to fix it. There are, however, some things you can do to reduce or eliminate coil whine if it’s too much for you to handle.

Coil whine is a high-pitched sound some devices inside the computer case can create under certain situations. This hiss or squeal resembles a dull, boiling teapot sound, only usually much quieter.

This high-pitched whining noise isn’t always heard by everyone in the same way since the frequency varies and not everyone can hear the same frequencies. In fact, most components in a computer produce a sound but it’s usually just too quiet for most to hear.

Not only is the loudness of the whine dependent on the person hearing it, it also matters how much electricity is moving through the wiring and, of course, the distance the computer is from your ears!

Nearly any device can experience coil whine but it’s common for video cards to make a high-pitched sound since they’re often used for high-intensity tasks—like video games, graphics editing, and video playback — and are usually being used for those tasks for hours at a time.

One way to verify what’s producing the noise so that you can better determine how to fix it is to pay very close attention to when the noise happens. If the noise is much louder than usual when you’re playing video games, you might blame your video card (that"s probably what"s causing the high-pitched sound anyway).

However, be careful to not confuse other noises — like pops, rattles, or clicks — for high-pitched sounds and just assume it"s coil whine and walk away without addressing it. For example, a squealing noise might at first seem like coil whine but it could actually be noise from the hard drive pointing to a failing HDD, and another sound might more accurately be a sign of a rapidly overheating power supply.

Even if the noise isn"t coil whine, it doesn"t mean that whatever it is is causing a problem. For example, if your computer makes a noise each time you"re doing something like burning a movie to a disc or ripping music from a CD, that"s just the optical disc drive—it"s normal to hear the disc spin.

In other words, it"s important to listen for the distinct hissing that most likely means the problem is with a vibrating coil, in which case it can be called coil whine and you can address it as such.

You might even experience a high-pitched noise when the computer is off! This is most likely an issue with the power supply. Something you can try in that situation is replacing the power cord with one that features a ferrite bead.

Some “coil whine fix” solutions online will tell you that you cannot do anything to fix a high-pitched noise coming from your computer, but that just isn’t true.

You’ll also read that coil whine is a symptom of a broken computer, and while it’s true that it could mean that the components making the noise are inexpensive or not designed to shield sound or vibrations, it’s not a tell-tale sign that something isn’t working.

There are multiple things you can try to reduce the effects of coil whine, from addressing the wiring directly to buying or building a computer made specifically to absorb noise, but those are the more drastic solutions.

Move your computer further away from you! I know, this doesn’t really sound like a good solution for actually fixing coil whine, but it can definitely reduce all those noises coming from your computer and is by the far the easiest method to try.

When these components, especially fans, collect enough dust that it slows down how they work, it can force them to run faster to make up for it, which is going to demand more power and thus produce more noise like coil whine.

If reseating fixes the noise, it’s possible that it wasn’t coil whine but instead just vibrations from a device rattling against its own frame or slot on the motherboard or case.

If the GPU is rendering too many frames too quickly, it’s going to cause your GPU to work more than you need it to, which could be the cause of the coil whine. Similarly, you might hear sounds from your fan if they"re overworking.

Paint insulating varnish or coil lacquer, available at Amazon, on the specific coils that you suspect are causing the high-pitched noise. Once it dries, the liquid will form a thick, protective barrier around the coils that should help reduce or even completely stop the coil whine.

This technique seems to be a popular one for fixing coil whine but it’s obviously not the easiest method, which is why it’s so far down this list. You first have to know what, specifically, is causing the high-pitched noise before the lacquer will do you any good.

Replace the part that’s making the high-pitched noise. If it’s still under warranty, you might be able to get a free replacement because of the excessive noise, but most manufacturers will not cover a replacement when the problem is just a high-pitched sound. The reality here is that the replacement will probably suffer from coil whine, too.

When buying a new computer part to fix coil whine, try looking at places that have a good return policy so that, if after running a benchmark on the hardware the high-pitched noise is too much of a bother or comes on too easily, you can just return it and look elsewhere.

Before committing to buying any new computer part, check the reviews and see what other users are saying about coil whine. If there are lots of complaints, you’d be wise to avoid buying anything that will just repeat the problem you’re trying to fix.

If you don’t want to go as far as replacing the hardware, and nothing else worked to stop the coil whine, you’re left with just dealing with it. Since there’s nothing actually wrong with the computer when the only symptom is a high-pitched noise, you could just use noise-cancelling headphones whenever you’re on your computer. That should be enough to block or drown out the noise.

Hello,

I had noticed a high-pitched whine from my monitor while playing the Beta version of a certain game (since the official release, the Refresh rate was lowered).

More recently, I had increased my screen resolution from 1024*768 to 1152*864. Since then, I"ve had a problem with a high-pitched whine. I had lowered the Refresh Rate from 75Hz to 70Hz, which caused the noise to cease... but not permanently. It occasionally recurs and ends later on (sometimes if I turn off the monitor for a few second/minutes); I"ve come to ignore it after a while.

A few minutes ago, the display itself began flickering slightly, and this accompanied by the same whine. As this worried me, I turned down the resolution to 60 Hz temporarily and decided to ask about this.

On a side-note, I cannot bear 60 Hz, considering I spend much time on the computer, likely more than is healthy. =P

I"ve been doing a bit of research on the whine, and was reminded that the last time I checked my monitor"s maximum refresh rate, I was using a lower resolution. My monitor manufacturer"s website does not mention the max. refresh rate for my resolution.


I have come here to ask the following:
- What are the possible causes of this; could it cause permanent damage or lower the life of my monitor? Or is a failing monitor the cause? Is my monitor capable of handling the 1152*846 resolution at 70 Hz?
- Is there any way to calculate maximum refresh rate for a monitor at a given resolution, assuming you have that very data for two or more other resolutions? Or alternatively, could somebody find out the maximum refresh rate for the Daytek DT-95A monitor at 1152*864 resolution?

EDIT: And before anybody starts linking me to Daytek"s website, note how there"s no listing of maximum refresh rate for my resolution.

PC monitors that make loud noises aren’t very welcome in most people’s homes, and chances are that loud, high-pitched noises coming from them are an indication of something that’s wrong. There can be multiple reasons why this occurs with monitors, which doesn’t particularly help.

Having a high-pitched noise coming from your computer is obviously very annoying, and furthermore makes the user experience horrible. So, why do PC monitors sometimes make high-pitched noises for no apparent reason?

The most common issue that causes noise coming from your PC monitor is that your LCD monitor has a problem regarding the circuits in the monitor that controls brightness. The solution is to raise the brightness to the max in your monitor settings. After this, you can lower the brightness in your GPU control panel to compensate for the high brightness of the monitor.

Now that you’re aware of the most common problem and solution regarding high-pitched noises coming from PC monitors, let’s go over it in detail. I’ll provide detailed information on how you do the above fix and further information on what to do if this solution doesn’t help you.

As I mentioned previously, LCD monitors sometimes have problems with the circuits in the monitor that controls the lighting. Without getting into specifics of the components, you can fix this by enhancing the brightness settings on your monitor.

Monitors have buttons, usually located at the bottom of the screen, that can control different settings for you. Exactly what these settings depend on what monitor you have, but brightness is a universal setting.

Another quick fix you can try is turning your monitor audio setting down to 0. For some monitors, this can be achieved in the monitor setting on the monitor itself. The button is usually found at the bottom of the screen, close to the power button.

Try to remove as many peripherals as possible, and see if your monitor still whines. Also, remove things such as TVs, radios, etc from the close proximity of your PC setup, as these things can cause interferences and make your PC monitor whine.

Remove dongles, game controllers, and other stuff from your USB ports, too. This way, we can quickly rule out any peripherals/other devices such as radios from being the reason for the high-pitched noises.

If you bought your monitor recently, chances are that you can still return it and get your money back. Manufacturing errors with monitors and similar products aren’t the rarest of occurrences, which means that your monitor can have some sort of manufacturing issue.

If you’re unlucky, the issue lies within your building’s bad electrical wiring, but I would still recommend that you try this out. Move it as far from its original position as you can within your household and see if the monitor still produces the high-pitched noise.

Users have reported that the noise scales with their refresh rate. This is to say, the higher the refresh rate, the louder the noise. This is therefore a bit of a desperate solution, but you can lower your refresh rate to see if the noise lowers in intensity.

I realize that it isn’t optimal to sacrifice the refresh rate in order to lower the annoying noise coming from your screen, but you can try at least. If this is the case, there is a high likelihood of your monitor having some sort of faulty component.

Yes, I think the LCD needs a "high" voltage, meaning higher than the input voltage, but probably in the tens of volts, not hundreds. So maybe the board has one or more voltage doubler stages.

I can"t confidently say you are wrong but I think you are wrong. LCDs don"t need high voltages. You could settle this by checking around the circuit with a DVM. There are people on here who know this stuff better than me and I invite one of them to comment.

I found that touching the pins of that small 8 pin chip at the top right stopped the high pitch whine for a moment. There was a 50~100Hz buzz and the display went blank, until I removed my finger.

In normal operating conditions, there shouldn"t be such high pitched noise with monitors. Please connect the monitor to different AC outlet and try to lower the refresh rate.

1. Check the video cables. Make sure the cable is securely connected and if possible change the cable. If using an LCD TV in Video mode, make sure the cable is connected to the correct input.

The CPU itself cannot generate any noise because the hardware and compoments on the CPU are not capable of that. This is called "Coil Whine" that comes from the inductor on the motherboard or graphics card, or in the power supply.

This is because some of the cable come with the power supply that will have a capacitor on it, and some do not.  Capacitors is a good factor for current stability which could solve the coil whine issue in some cases.

I"m experiencing a very annoying high-pitched buzzing sound with my Studio Display, I"ve spoken to others on Twitter who also have the problem and I"ve had Apple support on the case but nothing was resolved.

I have an electric car with a charger built into the house power supply, when the car is plugged in and charging the Studio Display"s noise becomes excruciatingly high pitched and loud. Due to this I charge the car over night these days.

Here"s a video of the sound, it"s hard to pick up so you may need headphones. Ignore the background noise, the high pitched tone should be audible. In real life it"s much more obvious and very annoying.

It might be a little frightening when your TV makes a high-pitched noise. However strange as it may sound, most manufacturers say you shouldn’t panic when this happens. A high-pitched sound produced when turning on your TV is completely normal.

This sound is produced by electrical charges made by the TV to power the pixels that create the images displayed on your screen. It is essential to note that the high-pitched sound produced when you turn on your TV shouldn’t be too loud either that it is audible when the TV volume is set to normal levels. Additionally, if you are getting no sound from TV there could be a different problem.

An unusually high-pitched noise from the TV could also mean a hardware malfunction. Fortunately for you, we have compiled a step-by-step guide on how to fix high-pitch noise from even the most highly-acclaimed TVs.

Several things could lead to a high-pitched noise from your TV. Different components inside the unit can produce these noises. These include the deflection yoke, horizontal flyback transformer, and horizontal deflection circuits, among other components. The connections to the tv such as the HDMI port may also be faulty but you can always learn how to fix an HDMI port on the tv.

A high-pitched sound might not necessarily point towards a hardware fault in your TV. However, before getting to that conclusion, the following steps will help you fix the issue.First, unplug any devices that might be connected to your TV unit and pause to listen if the high-pitched sound disappears. If it does, you’ll have to plug in one input device at a time to find the source of the noise. It should be noted that a faulty connection could be responsible for multiple problems that can arise with your TV like showing a black screen. Or if you are watching something with a soundbar, a faulty connection could cause the sound to be delayed on the TV.

A high-pitched sound from the TV will also be amplified depending on how the unit was installed. Glass, wooden, or wall brackets where the TV is positioned can increase the tone of the noise. Position your TV on a rubber surface to help muffle the sound.

Ideally, all TVs make some noise that can be heard in a quiet room with your ear placed on the unit. This is quite normal.If you have a home theater system or a soundbar connected to your TV, the high-pitched noise gets louder when you increase the volume. You will need to check your connections, including HDMI or RCA, for faults or physical damage. If you notice any wear and tear, replace them with higher shielding options.

If you have tried all the above options and you are unable to tone down the high-pitched sound, it could be an issue with an internal hardware component. You may want to try fixing the resolution on the tv too. But if it fails, it is essential to seek assistance from the manufacturer on your TV warranty status.

Several things could lead to a high-pitched noise from your TV. Different components inside the unit can produce these noises. These include the deflection yoke, horizontal flyback transformer, and horizontal deflection circuits, among other components.

A high-pitched sound might not necessarily point towards a hardware fault in your TV. However, an unusually high-pitched noise from the TV could mean a hardware malfunction.

If you have a home theater system or a soundbar connected to your TV, and the high-pitched noise gets louder when you increase the volume; you will need to check your connections, including HDMI or RCA, for faults or physical damage.

Many users report constantly hearing a whining, high-pitched noise from their PC. Why is your PC making such noises? How can you resolve that issue? Here we will be answering all these questions and going through each possibility. So, stay tuned!

Dusty fans, aging motherboard components, loose wire and connections, loose screws and bolts, faulty old hard drives, component overheating, and electrical devices that interfere with one another are common causes of high-pitched and whining sounds.

Different computer hardware, like the CPU, GPU, power supply, and case itself, have fans. These fans are used to cool down the hardware whenever it’s overheating. If these fans are dusty and rusted, they will produce high-pitched noises. Here are a few tips to eliminate these noises:

If any wire is not connected or has loose ends, it will cause electric pulses that will make high-pitched and whining noises. Therefore, properly connect all the wires to their respective slots and hardware. Moreover, follow these few tips to avoid this issue:

Your computer shakes whenever the GPU, CPU, or PC fans start spinning. It can cause other components to vibrate as well. Also, if you have any screws or bolts that aren’t tight enough, they will make high-pitched whining sounds. You can avoid this by simply tightening these screws and bolts.

There are two main parts to a hard drive: the disk, which spins and stores information, and the head, which rotates back and forth and reads the information from the disk. If you have an old and faulty hard drive, its head will move and produce a high-pitched sound.

Nowadays, we don’t often use DVD drives. Instead, we prefer USB and other portable data storage devices. But, unfortunately, it makes these DVD drives old and faulty. If you have a damaged DVD drive, its dusty old motors and scanner will produce high-pitched noises.

Component overheating is a common issue in computers. When you run demanding apps, games, or other tasks, your CPU and GPU will start overheating and produce high-pitched sounds. To prevent this, you must invest in a good cooling system.

Therefore, move all extraneous hardware and devices away from your computer. For example, computer motherboards have different coils that produce their magnetic field. If the nearby devices have their electrical field, it will cause the coil to whine.

High-pitched and whining sounds irritate and can lead to frustration while working on any important project. Here are a few tips you can follow to avoid these noises:

There are many reasons behind the PC whining and high-pitched sound, and we have listed the most important. Here we have also described ways to get rid of this problem. These tips will help prevent such noises in a laptop or desktop computer. We hope this article resolves your issue.

Hey, I’m Hammad. I have been writing for several years now and have amassed a wealth of experience within my field. My focus is on technology and gaming, two areas that I am highly knowledgeable about.

Sounds play an important role in troubleshooting a computer. Computers have pre-programmed beeps and sounds that notify you of clear hardware issues. Then there are the subtler sounds: a high-pitched whine or squeal that starts one day is a sign that something isn’t working exactly correctly. If you’re willing to take one of the computers in your office apart, you can identify the source of the sound precisely.

Finding the Noise With the case off of the PC, disconnect all the peripherals -- printer, mouse, keyboard, monitor and any USB devices you have connected to your computer and turn the computer on. Wait for the high-pitched sound to begin and then listen carefully, moving your ear around near (but not touching) the motherboard to find the source. It’s more likely that the noise will be coming from the fan or the hard drive than any of the electrical components, but it’s best to identify it with the case off before continuing troubleshooting.

Motherboard or Not? If you’ve taken the computer apart and still can’t identify the source of the sound as something directly on the motherboard, try temporarily disconnecting the CPU fan and the hard drive to eliminate those as the source of the sound. Turn the computer off and then unplug the red, black, white and yellow cord from the back of the hard drive. Turn the computer on and see if the sound has stopped. If not, turn it back off, reconnect the hard drive, and remove the red, black, white and yellow cord from beside the fan over your CPU. Turn the computer on again and see if the noise has stopped. Both of these devices can produce high-pitched whirring sounds when they begin to malfunction, though the sound isn’t a harbinger of compete device failure.

Electrical Sounds Occasionally, high-pitched sounds coming from the motherboard are from electrical components in the system experiencing a strong charge or malfunctioning. The power supply can emit a high-pitched sound if it experiences a surge. “Squeals,” according to Tecca’s Matt Jessell, can be ominous signs, indicating the chips and capacitors on the motherboard are failing. When you start to hear a high-pitched sound that you can’t identify, consider replacing the computer in your office.