High Pitched Whine From Power Supply

I have that same problem both of my SBPro 2 cards, tried different (good) power supplies, as well as several motherboards to no avail. This can be caused by a lack of sound dampening materials used for the construction of the power supply. High frequency noise coming from a power supply usually comes from a leaking capacitor. Buy Antec HCP-1200 High 1200W Current Pro Power Supply online at low price in India on Amazon. One was white and bald, dressed in a battered old white tank top and jeans. When I'm trying to sleep I hear a high pitched, ringing noise. I'm not sure if this is normal or something I need to be concerned about. Here's an article published by Dell:. That high-pitched noise is in common between many brands of audio interfaces, as you can hear recordings on Google. If I put my meter between the neg pin of the power in and the case of the box I get -9V. These noises can sound like hissing, buzzing or a high pitched whine. In fact, it is loudest when I put my ear up against the coil, which I can see just inside the enclosure. Maybe fine for cameras, not appropriate for audio applications. Magnetostriction is less likely to be at the root of a high-pitched noise coming from the power supply than some other possible causes, as it tends to produce lower-frequency sounds; however, under some circumstances it can cause a higher-frequency whine. Calls are coming in and when answering, there is a high pitch tone. When I spun the compressor wheel by hand you could hear a simular noise (at a much lower sound level). Seems like a bad bearing in the small fan that is in there. The whine is usually because the minimum amount of electrical current is not being drawn from the (switched mode) power supply. Most supplies these days are switch-mode (SMPS), which is smaller, lighter, cheaper, regulated, but more susceptible to high frequency switching noise (if you’ve ever used a cheap power supply or had your amp next to a laptop or something, and got that high pitched whine, that’s what it is). Immediately upon powering on. I have been reading about replacements, and getting a linear power supply is the obvious choice, but which one is hard. unplug everything. Noise from Fans. Why does this light make such a high pitch noise ? Why does this light make such a high pitch noise ? after you remove the batteries/power supply. Whatever it is, it's a fault and the box needs replacing straight away. So I picked up a Donner DP4 "Isolated" power supply. We now notice a very high pitched squeal when all lights and appliances are turned OFF and the TT is plugged into AC power. Laptop chargers are similar but output higher DC voltages. Just sitting here web searching about the high pitched whine ringing. This happens in almost all electrical devices, usually at a frequency and volume that's inaudible to humans, especially inside a case. (HDD or the main fan), then it's most likely the power supply making "coil whine": Coil noise - Wikipedia,. The problem is most likely your 1spot power supply. Just a stable, constant ringing. The supply makes a very high pitch noise when operating , and its much like high pitch ringing in your earsit's very irritating and can be heard from any point in the room. Switching supplies work at much higher frequencies and will introduce 10kHz hiss or a high pitched whine. I took the computer. The whining noise stopped. Can somebody from support please get in touch?. SSM 47546 – 2017-2018 Explorer – High Pitched Buzzing/Ringing Noise From 110V DC/AC Inverter. I think these should be sat around zero. When it was clicked off no whine. 5V < VOUT < 15. The tone is still on my phone. Noise from Fans. Ive tried getting my mates to try hear it but the noise it almost super/subsonic so they cant hear it so am I going crazy or is my psu about to explode lol My specs are. Four industry-leading independent +12v rails are provided for more stable and safer power output. Anyway, I tried to power it via a daisy chain, and a high pitched whine flowed through my amp. I've getting a high pitched whine that I've having trouble diagnosing. Putting my ear up, it's louder the closer I get to the PSU. Confirm this by disconnecting the PSU from the computer completely, no wires leading anywhere, and unplug it from the w. I am having the same issue, been a few weeks but it's got much worse in the past few days. These dimmable power supplies work by varying the power on the AC input side of the power supply by means of a TRIAC dimmer. Ask Question A power supply capacitor was subjected to 5-10 kHz ripple. My LG monitor has a noise too coming from it's power supply unit and it occurs whenever the screen brightness is not turned all the way up. As soon as I plugged it in I was able to hear the high pitched noise from the power supply, it really is unbearable. They are really great (though expensive) except for one thing. Just bought XBox 360 - power supply making a high pitched whine I purchased an XBox 360 Elite at Best Buy today - right out of the box the power supply was making a very high pitched whine. It may not be an immediate issue, but it probably won't get better. I have a shower that has only 1 handle to regulate the hot and cold water. However, as soon as I give it a print command, it wakes up and the whine returns. It wasn't until a 3rd tech. The other thing that causes the high pitch whine sometimes is the power supply being too close to the computer/other gear. I was using the 250 watt power supply which came with my Aopen HQ 45 case , I felt it needed 300 watts after reading posts in many forums across the web. The supply makes a very high pitch noise when operating , and its much like high pitch ringing in your earsit's very irritating and can be heard from any point in the room. My new Acer P191W LCD Monitor has a high pitched whine that is extra loud on pages with rich and dark colors. That shrill sound is known as coil whine, which is a phenomenon that can occur in an array of PC components, but it typically occurs w. The case is physically taller because of this. When the supply is plugged into the console and the wall but the console is not powered on a high pitched but very quiet sound begins to emit. To determine if the High-Voltage Power Supply is energized by the Battery and is currently charging the tube, hold the viewer near your ear. It did sit for about a year and a half before my purchasing it. if you are getting whine while connected to power then it could be ground loop or improper house wiring (clubs suffer this issue a lot due to the quick/dirty extra power options) if you get whine off power as well as on power then disconnect phono outs and use H/phones only , does the issue still exisit, if so and you have tested a different os. I'm an engineer and have seen this happen sometimes with switching power supplies causing a high-pitched noise that my younger colleagues can hear. High pitched noise from modem/router/super hub on ‎28-10-2015 20:57 We're getting a high pitched noise from our router, looking through the forum this is a common problem and has been going on for a number of years surely it should've been sorted by now?. I shot a series of interviews the other day and when I got back to the edit suite noticed a high-pitched whine in the audio track. Learn how to diagnose the high-pitched sound coming from your power supply unit and what you can do about it. Some Pixel 2 Users Are Complaining About A High-Pitched Whine and Clicking Noises (arstechnica. The sound is usually only noticeable when the laptop is in use and the battery. When plugging in, a high pitch noise occurs at fuse box. It is almost musical, and not at all grinding or abrasive. I just hooked up my APC Smart UPS SUA 1500 and it makes a constant high pitched whine. Power supply – If your device has some power supply issue, it can also lead to “laptop high pitched noise when plugged in” problem. com so I can setup an RMA for your power supply? Our SHIELD ATV team wants to inspect it to find out why it is making a buzzing sound. Magnetostriction is less likely to be at the root of a high-pitched noise coming from the power supply than some other possible causes, as it tends to produce lower-frequency sounds; however, under some circumstances it can cause a higher-frequency whine. Powering with a daisy-chain or multi-output power supply that shares its current across the outputs will result in a high pitched noise at the output like you describe. If you’re really annoyed by the high pitched hum/whine of the DRV8825 stepper motor driver when driving a lower current motor, and don’t need high speed microstepping, I’d suggest setting the chip to slow decay mode by connecting pin 19 of the IC itself to ground. It wasn't until a 3rd tech. The original thread is elsewhere but the symptoms disappear when the rig is run from a 12v battery. The problem is with the 37ish PC power supplies i plug into my wall. The high pitched buzzing sound is sometimes caused by a ground loop that travels through the USB cable and induces electrical noise in the audio signal. There is one wall wort USB power supply, but it wasn't plugged in. Ask Question A power supply capacitor was subjected to 5-10 kHz ripple. FYI, I needed to reverse polarity of the plug for negative tip pedals. By the time we turn on a 2nd light, the squeal is gone. A power supply too close to a pedal. Rare words are dimmed. We now notice a very high pitched squeal when all lights and appliances are turned OFF and the TT is plugged into AC power. If anything tells you from the infos above, it’s that the R9 390X seems to be a lot more beefy than GTX 980 –especially when it’s about the memory. Same with my Smart Power 2. Read the many user comments below. That is why I asked if you could disconnect the power supply on a laptop as this will break the loop. And sometimes when im scrolling or going through pictures i can also hear it makes different pitches of noise. as soon as i turn my 60 on i can hear this loud whine physically coming from the sampler itself and i think some of it spills into the internal sampling and output sections. The moment I switched to ON it instantly starts emitting barely noticeable high pitch noise. I believe the reason these have such a good rebate is because they have a high chance of producing a high pitch whine. Using a 1spot to power my board, and with the MXR in the mix I get a high pitch whining sound. I've now added in a 4th box on its own power since its reverse polarity, and I'm nopw getting a hight pitch whine. I recently purchased a boat and have noticed a high pitched whine that kicks on and off. It goes away when the mouse button is clicked and held the comes back right a way. I have adjusted current limits and steps per mm in the firmware. When you turn the switch off, the whine will stop. 5 D20 Power 60. The X1D faces the same issue with HC lenses, which arent updated. The whine is usually because the minimum amount of electrical current is not being drawn from the (switched mode) power supply. I can change and align body parts though. Power supplies are cheap and easy to replace so why take a chance. I emailed support and the guy asked me something about was it the power supply. Should i be concerned that the charger is emmiting these noises? Are these noises caused by the capacitors like in desktop psu's?. (HDD or the main fan), then it's most likely the power supply making "coil whine": Coil noise - Wikipedia,. 80-85 percent of the power supplys maximum output which is very close to the limit it can handle which is causing the noise when your in power saving mode your most likely sitting on 600w so this really means you need 800w power supply or higher basicly a machine drawing 600w or a bit more would need 800 or more to make it more comfortable. It has always been a difficult challenge for engineers to design an efficient and lightweight variable-speed power supply. The sound you hear is normal, you've finally just noticed it. A capacitive load connected to the output resistance of the op amp looks like a feedback lag (lowpass) which reduces feedback at high frequencies. I can hear a high pitched whine in the audio signal, but not with other regulated power supplies. Total power of 10kW. VCR is failing the power-up sequence; VCR displays DEW warning; VCR shows LOCKED in the display; VCRs with Alzheimer's Disease; VCR has gone whacko; VCR forgets settings following power failure; Display is dim; Display is dead but everything else works. Anyone have an idea which component is making the noise? Edit. Thanks everyone in advance!. I tried turning the set off and it powered down fine but then when i tried to turn it back on nothing but a black screen and the high pitched whining noise. My high pitched noise was constant but only when I had a browser open and it would stop when I moved my mouse. Bad voltages can create havoc on a. There is one wall wort USB power supply, but it wasn't plugged in. The detractor questions could use some comments to let you know why they are incorrect. Advanced Conversion Technology (ACT) provides an extensive range of AC-DC and DC-DC power supplies using proven switching or linear topologies. The Power Supply is making this awful high pitch noise! Only got my 8600 yesterday, and I notice this high pitch noise coming from somewhere, this morning I've narrow it down to the PSU from the mains. Problems or normal? I am not sureI have had power supplies do this as well and they work perfectly fine but i just can stand to have them in my pc since that. PSU making high pitched noise. Calls are coming in and when answering, there is a high pitch tone. I've read some of the instructables (and other tips) on quieting down noisy EL wire power supplies. 2mm powder coated steel and finished in white. Sounds like maybe a high voltage power supply or something. An alternative power supply of an other manufacturer did not make the laptop noisy. I have a 45psi pressure reducer installed … read more. When I went to my router to investigate, I noticed that it was putting off a very high-pitched ringing noise from the router itself. I'm using this to power a distortion guitar pedal, and it reveals that this power supply's regulation is not great. it gets louder (or quieter sometimes) when on or under a load (basically just sounds like it speeds up sometimes fast enough not to sound so bad). It was replaced by the XPS 420. Most people call it "coil whine" to describe the high pitched singing sound. The AC compressor is making a high pitch whine simular to a supercharger with the motor running. power supply making high pitch noise? , just got a pc today and this high pitch noise keeps coming out of the power supply on and off need help do i need a new one or is this normal its a 400watt power supply that came in a ibuypower pc thanks. Desk top computers don't generally have the power supply noise problem because of all the metal the case is made out of provides a good shield. Also, somebody said they heard the whine when dimming. The problem is most likely your 1spot power supply. I am hearing a fast clicking sound and a high pitched whine in the amplfier when I plug the touchmix into the same outlet or power strip as the amplifier. I seriously doubt also that the power supply of the radios (DC) does not eliminate all kind of AC ripple. Cleaning/dusting it (though there was hardly any dust inside), clearing cache, factory reset, nothing worked. I am probably going to replace the power supply soon (its proprietary and a pain) , but I have heard that this is possibly just a coil whine and can sometimes be simply fixed with some decent glue. The problem is highly specific to operating system, model and even individual machines. Using a speaker sim without a tweeter helped a little but the whine was still there in the background. I have a 17" Intel iMac (EMC 2124) that's producing a high pitched whine from the power supply (upper left corner). Another possible explanation: I have seen (or, rather, heard) this happen on an embedded device which used a switching mode power converter to supply power to a daughterboard assembly. The AC compressor is making a high pitch whine simular to a supercharger with the motor running. When you turn it on, you hear a high-pitched whine for several seconds, and then the circuit is ready to fire the actual flash tube. Register to edit. Oven has high pitched squeal or whine when power is on Whenever the circuit breaker is on, this oven makes a very high pitched whining noise that's just barely audible. I think it could be the power supply. The wired connection seems to be working normally, however, it is no longer putting out a wireless network signal. In the power supply circuitry at the core of these products, there is a demand for inductors that are smaller, with a thinner profile, lower DC resistance, higher current capacity, and higher reliability, along with increasingly low inductance in order to achieve high-speed switching in DC-DC converter ICs. The last few weeks I've had a high pitch whinning noise from the engine. A damaged power supply. So I think there must be some kind of grounding issue. Gate high = little whine on top of everything. 4_201504181055. I took the back panel off and there was a popped capacitor, right next to an inductor, some transistors and a heat sink. The Mosquito can work with a timer, motion sensor or remote control. 2: Antec Smart Power 2. I connected UART and have attached the log:. Same with my Smart Power 2. The power supply Part number is 996500044559 and coat about $140. The other thing that causes the high pitch whine sometimes is the power supply being too close to the computer/other gear. Apollo Twin's external power supply uses an energy saving feature that reduces power consumption when Apollo Twin is not connected to the power supply, or when connected but Apollo Twin is powered off. If it's the power supply, it could fail very quickly anyway. As the RPMs of your vehicle rise, the volume of the alternator whine can increase as well. The description of the power supply says isolated and that it uses the torodial transformer. It sounds almost as if your ears are ringing, but you're not alone. High-Pitched Noise with a Fan First you need to unplug the device connected to the power supply, and then remove the casing. Bad voltages can create havoc on a. I assume the. Barely noticeable, in fact, but it was definitely there. The whine decreased when I played the strings, but was very noticeable at any volume. Gate high = little whine on top of everything. I tried several different amplifiers and outlets. I recently purchased a boat and have noticed a high pitched whine that kicks on and off. Sometimes an inductor in a power supply will "sing". It starts working within a few minutes after setting it up. High pitched whine sound coming from Dell optiplex 960 power supply #2 M# F235E-00. The X1D faces the same issue with HC lenses, which arent updated. I have no other information than that. He could hear the high-pitched noise while the unit was turned on and determined that this was not normal. Can;t be heard while playing. I took the back panel off and there was a popped capacitor, right next to an inductor, some transistors and a heat sink. I shot a series of interviews the other day and when I got back to the edit suite noticed a high-pitched whine in the audio track. The PSU "power supply unit is taken on a lot of noise from the outlet. The location of the sound is somewhere around the cpu to power supply. 5 A switching power supply that I bought from Adafruit. The Power Supply is making this awful high pitch noise! Only got my 8600 yesterday, and I notice this high pitch noise coming from somewhere, this morning I've narrow it down to the PSU from the mains. My T60 PS is labelled P/N 92P1105, FRU P/N 42T5000, and is labelled "11S92P1105Z1ZBW96AV0R9 Rev 05. The TruePower New series by Antec offers users an advanced power supply solution, striking the perfect balance of reliability, efficiency and quality. There are several Phillips screws on the bottom which must be removed to open the unit up. said: Anyone else here notice the high pitched squealing an squeaking coming from the AC power adapter? Can you please contact me at [email protected] Mostly just curious if this is normal. Its also getting enough power with the psu. Apollo Twin's external power supply uses an energy saving feature that reduces power consumption when Apollo Twin is not connected to the power supply, or when connected but Apollo Twin is powered off. If it's a high-pitched electrical whine, I'd be thinking power supply actually. Another way, is to use an in line filter in the power supply, to the CB, to stop interference on. But it's normal. Remove the power supply fan’s protective plating, which is located in the center of the fan. ) It's not a ground loop. These noises can come and go and can be difficult to troubleshot for a couple of reasons. I have recently started hearing a soft engine whine driving my M3 (only 6k miles on it) at speeds between roughly 15-40mph, that rises in pitch as the car accelerates. doesn't matter whether the system is running, off, or in S3. Replace the part that’s making the high-pitched noise. I am having the same issue, been a few weeks but it's got much worse in the past few days. Sebastian Eifrid this high-pitched “whine” can be particularly annoying for many users and is especially noticeable in notebooks. My first guess is that something awry with the power supply itself. Its so high pitched it makes me cringe, It happens once and a while and Im pretty sure its the power supply. Well, my AX850 makes a whining noise. If anything tells you from the infos above, it’s that the R9 390X seems to be a lot more beefy than GTX 980 –especially when it’s about the memory. I've noticed a high pitched whining noise that sounds like it is coming from the power supply/GPU, both being less than a month old. I'm familiar with the lower pitched hum when you've got some sort of grounding interference, but this one is higher. Recently, my wireless connections on my WNDR3700v2 quit working. Alternator whine in your car stereo can be an elusive problem. I suspect the. We have been using a 4-slot Amica induction surface for 4 years now, and it started making a barely noticeable high-pitch whining noise, even when it is not in use. PS: According to a posting here in the forum, a bad power supply could cause coil whine. Powering with a daisy-chain or multi-output power supply that shares its current across the outputs will result in a high pitched noise at the output like you describe. That high-pitched noise is in common between many brands of audio interfaces, as you can hear recordings on Google. I’ve been trying to explain to people how the high-pitched noise emitting from my Dell Latitude D820 (which is a great computer) has been driving me crazy! Indeed, after complaining about this noise, most people actually think I have GONE crazy. Transformers and other components in a power supply can become very hot. As such, a defective device can generate audible coil whine during operation. My excitement didn't last long. It's just a high pitched whine that's faint because it's just outside of normal audio response for most human ears. there could be high pitched harmonics coming off those low tones, but your dog would be the only one hearing it. The weird thing is, it only makes the noise when I am playing a game, for instance if I tab out, the noise will stop and if I tab in it will start again. By the time we turn on a 2nd light, the squeal is gone. There is no whine when zone 1 is heated. If you are talking about a phone charger, they are designed to lower and change the outlets 120 volt A/C electricity to the 5 volt DC that your phone requires. Boxed power supplies are formed from 1. I have had several PSUs now. 53 ghz, Enermax EG465P-VE(FM) 431W power, Lan-li Alum. I have a Intel NUC i7 RX Vega Hades Canyon VR I7-8705G and the Power Supply I recieved made a lot of noise. What I've noticed is that on my TL071 chip I'm seeing around 9V at pins 2, 3 & 6. I have a computer that produces a constant high pitched ringing / whine noise. High pitched noise from modem/router/super hub on ‎28-10-2015 20:57 We're getting a high pitched noise from our router, looking through the forum this is a common problem and has been going on for a number of years surely it should've been sorted by now?. RE: Fuel Pump high pitch whine IP: Logged Message: The only "shop" I've had work on my vehicles the last 30 years is a body shop. Unplug the machine from power strip, surge protector or APC backup and plug it directly into a power outlet on the wall. Having 8GB on board is a huge advantage for those of us who wish to fire up their game all across 3 or 4 monitors at a resolution where porn in-game graphics is as beautiful as real life and without stuttering. I am having the same issue, been a few weeks but it's got much worse in the past few days. These noises can sound like hissing, buzzing or a high pitched whine. Seems like a bad bearing in the small fan that is in there. There are several Phillips screws on the bottom which must be removed to open the unit up. Upgrade to 5 stars. Two components in a PC that might make a whining sound are power supply and disk drive. If I put my meter between the neg pin of the power in and the case of the box I get -9V. Alternator whine in your car stereo can be an elusive problem. There was no warning to my inverter going pop other than with hindsight. That is why I asked if you could disconnect the power supply on a laptop as this will break the loop. Sometimes the SMPS (switched mode power supply) that most electronics use now creates a high whining noise when items running from them are powered only in standby. , portable GPS, cameras, recorders, laptops). What do think caused the sound? The adapter? Power strip?. Generic transformer power supplies are not well regulated and will usually introduce 50/60 hz hum in high gain circuits. What can I do. What might be the cause of high pitch sound coming from a switching regulator circuit. That high-pitched whine you are hearing is the 1spot's switchmode power supply. com so I can setup an RMA for your power supply? Our SHIELD ATV team wants to inspect it to find out why it is making a buzzing sound. I have erased flash and flashed "Firefly-RK3288_Android4. I won't say it's not the capacitors, but the mid-drive DC bus is among the areas least likely to generate the high-pitched whine. High pitched noise from modem/router/super hub on ‎28-10-2015 20:57 We're getting a high pitched noise from our router, looking through the forum this is a common problem and has been going on for a number of years surely it should've been sorted by now?. If only I had read the reviews. it gets louder (or quieter sometimes) when on or under a load (basically just sounds like it speeds up sometimes fast enough not to sound so bad). These dimmable power supplies work by varying the power on the AC input side of the power supply by means of a TRIAC dimmer. Last edited by kb1fyr. The main reason power supply units blow after 2 or 3 years is because that's how long it takes the dust buildup inside to cause it to overheat and self destruct. Like others, the noise is coming from the upper right of the machine. I have been reading about replacements, and getting a linear power supply is the obvious choice, but which one is hard. I've noticed a high pitched whining noise that sounds like it is coming from the power supply/GPU, both being less than a month old. The tone is still on my phone. (HDD or the main fan), then it's most likely the power supply making "coil whine": Coil noise - Wikipedia,. Just a stable, constant ringing. It was a high-pitched whine, which changed in pitch with change in RPM. Does anyone have a power brick that makes a really high pitched noise - especially noticeable when the xbox 360 is off (but connected to a power supply that is on)? Doesnt sound right!. As for how exactly it happens, without getting too technical, it comes from inductors. Strange thing is that even my SB 2. My Vizio LCD TV went black and then made a high pitched noise and started making clicking sounds. The Power Supply is making this awful high pitch noise! Only got my 8600 yesterday, and I notice this high pitch noise coming from somewhere, this morning I've narrow it down to the PSU from the mains. For applications with 5. I have adjusted current limits and steps per mm in the firmware. I'm familiar with the lower pitched hum when you've got some sort of grounding interference, but this one is higher. There was no warning to my inverter going pop other than with hindsight. I've also seen (heard?) that high-pitched whine from transformers. The problem is typical of the high frequency main ferrite core transformer or its associated ferrite wound copper inductors which have not been dipped in resin by the inductor component suppliers. I have a 17" Intel iMac (EMC 2124) that's producing a high pitched whine from the power supply (upper left corner). A side effect of this energy saving feature is that the power supply will emit a high pitched noise when it is not supplying power to the Twin. Do you know what could be causing this?. Hello, guys Wanted to share my experience with PSU coil whine and what I have done to mitigate it. I haven't found much online about this is this normal for RGB lights to cause a high pitched sound as they draw power? If not, could the issue be my motherboard or the power supply? I have 3 RGB components from diff manufacturers - OLOy Warhawk RAM, ASUS Strix graphics card and Phanteks case RGB strip. So disconnect the power supply from your mainboard and jump the green wire on to ground using a paperclip. There are several Phillips screws on the bottom which must be removed to open the unit up. That was the last time the power button had any affect on the state of the tv. Identify the underlying cause of the whine to silence it for good. Unfortunately the power supply is proprietary, and expensive to replace, and other than the noise it functions properly. We recently moved into our new house and I've started to notice a high pitched whine coming from the furnace. That high-pitched whine you are hearing is the 1spot's switchmode power supply. Then It is like pulsing about every 4-5 seconds no load AC power. What might be the cause of high pitch sound coming from a switching regulator circuit. - The tone is still there but is quieter between stations. Same with my Smart Power 2. Click on a word above to view its definition. Ditch that thing and buy a high-quality ISOLATED OUTPUT power supply like the VooDoo Labs ISO-5, or at least put the BDDI on it's own wall-wart power supply. The reality here is that the replacement will probably suffer from coil whine, too. Question PS4 making high pitched whining noise. The motor windings are basically vibrating at the VFD's carrier frequency, creating the sound you hear. Hi there, just installed my new playbar. Pressing the power button now has no effect on the set the whining is constant until you unplug the tv. " The whine the device makes is around 8kHz, and drops to about 800Hz when there is no load on the device. High frequency noise coming from a power supply usually comes from a leaking capacitor. A crossover of MLP, Star Wars, and Clone Wars set before and during Episode II-III. When I went to my router to investigate, I noticed that it was putting off a very high-pitched ringing noise from the router itself. But even at worst, power supply fans usually only run about 2000RPM. 5volt wall-wart for the accessory and plugging in the power plant, there is a very high pitched sound emitting from the plant. Replace the part that's making the high-pitched noise. Your description implies that the power supply (PSU) is shot. What can I do. It’s a fiddly bit of soldering but those sub-harmonics were annoying me. However, high voltage supplies tend to run at lower frequencies because of the high effective capacitances presented by the high voltage transformer. Generic transformer power supplies are not well regulated and will usually introduce 50/60 hz hum in high gain circuits. The only light on the system is the green power light that is on all the time anyway. Sebastian Eifrid this high-pitched “whine” can be particularly annoying for many users and is especially noticeable in notebooks. If I stress all 4 cores, it will start chirping. The power supply in my desktop is making a high-pitched whine whenever it's plugged in and the rear switch is turned on. Chirping/high pitched coil whine. Back in the day I had a PSU that had no coil whine noise, that was in 2000, then I build a new system using Enermax, and I started hearing a high pitch noise. When "plugged in but not connected to a device", zero current (and power) is drawn from the AC adapter simply because there is no load attached to the power supply. I've heard switched mode power supplies make a terrible whining/buzzing noise due to something resonating.