Beeping Electrical Appliances: Computer Power Supply & Network Transmitters - Load & Brands

Hi,
I know this topic has been discussed many times but maybe someone has come across something like this.
From time to time I do not say that the power supply in the computer is squeaking quietly all the time, I connected it to the meter and during the squeaking the load is the same all the time, so it's not the fault of the sudden load ... The old power supply squealed, now the new one and all the time the same effect - models and different power supply companies.
In addition, I have network transmitters at home (LAN network over the power grid) and, interestingly, they also squeal from time to time, but when they start, it's not for a moment, like the power supply for 3-4 seconds, it can only squeal for 2-3 days and suddenly it stops and everything goes back to normal standards....
The power supply beeps from time to time and the beeping lasts about 3-4 seconds....
Has anyone experienced such an effect?

Regards
Yes

It's possible that coil whining is the cause. There are ways to seal them, but I've never done anything like that.

Son (32) supposedly hears cheap (not more expensive) LED bulbs (high-pitched sounds), I can't, maybe because I 63. "LED bulb": the term most often used at auctions for lighting elements made of LEDs (plus power supply) with a typical E27/E14 thread, replacing tungsten filament bulbs more and more often.

So wait it out?

My graphics card used to beep like that. Maybe it's the VGA and not the PSU?

taken wrote:

power supply in the computer

cirrostrato wrote:

led bulbs

Unfortunately, most of today's electronic equipment has a switched-mode power supply. Such power supplies can emit in addition to "radio" interference and acoustic interference - the sound of the converter itself, operating at a fairly high frequency. While the range of sounds audible by the average person decreases over time (in the upper frequencies), there are still harmonics of frequencies and sometimes even age does not help. (it is estimated that the upper range of audible frequencies from 20kHz decreases by 2kHz every decade)
Unfortunately - the price of progress and savings.

slawekjang wrote:

It's possible that coil whining is the cause. There are ways to seal them

It helps in some cases - when, for example, the original gluing of the core "let go". However, there are still filter coils - with them the problem is similar, although the windings themselves squeak (the core is toroidal and has no effect on this type of audible sounds).

slawekjang wrote:

So wait it out?

Or get used to...

However, I advise you to disassemble the power supply and try with gluing. Rather, the colleague does not lose anything, and there is a chance that he will succeed .
I found this analysis. Maybe it will help.
https://psufaq.wordpress.com/2008/03/16/coil-sealing/

Have a friend share photos later or write how he coped with the problem .
Regards

Hi,
The problem is that yesterday I picked up a new power supply from the warranty because the old one died and also squeaks....
Is there any other way to explain it - maybe something wrong with my electrical system? Or maybe someone in the block turns on something that causes my devices to squeak? I don't know but it's really annoying...

Added after 1 [minutes]:

lukiiiii wrote:

My graphics card used to beep like that. Maybe it's the VGA and not the PSU?

For 100%, it's not the graphics I checked because I also had this effect on the old graphics
Interestingly, when the computer is turned off, the computer power supply also squeaks from time to time - after disconnecting from the power supply, the squeaking disappears....

I immediately write that it is also not the motherboard because when the new power supply came, I plugged it in and it also beeped sometimes even though NOTHING was connected to it ...

Hello

I would suggest powering one of the "squeaking" devices in a completely different place - e.g. at friends'. Perhaps someone nearby is interfering with the power grid.
I have had many times in the plants for which I provide services with generated sounds in electronic devices (computers, printers, etc.), which was caused, for example, by a malfunctioning inverter. Sometimes it's a screech, sometimes it's a hum.

Or a friend has too good an ear and can hear pulse converters playing. :-)

kiss
-DAREK-

For me, the monitor when it is in stand-by characteristically howls with a modulated tone - the controller is probably stupid due to the lack of load I dealt with it simply by turning off the switch on the case when I'm not using it. I've also heard about the USB-powered relay, which cuts off the power to the monitor when the computer is turned off.

However, I would look in the installation, not in the devices, because it is impossible for a completely new power supply to have the same symptoms as the old one, which in addition died ....

Have you measured the voltage in the system? recently I checked at the client's and the sockets had 208V

A network parameter analyzer would be useful.

I agree with Deleted, you have very good hearing, I also used to hear the TV from several dozen meters, today it is as deaf as a tree and I can hear the drums best.

slawekjang wrote:

However, I advise you to disassemble the power supply and try with gluing. Rather, the colleague does not lose anything, and there is a chance that he will succeed .

And I, for my part, recommend a small can of varnish and a thorough bath of the entire squeaking element.
Proven and very effective

You can also try flooding the coil with wax.

Now I will ask a very trivial question to the author, what is the manufacturer of this computer power supply?

I hear ssd hard drive. I checked the specs and they give the following data:
Operating vibration: 2.17G peak (7-800Hz)
Vibration at rest: 20G peak (10-2000Hz)

I can also hear the monitor in standby mode and most power adapters and chargers. An interesting solution with this usb relay, maybe I will use it

There is such a drawback with this that some computers have usb voltage also in standby So it's better to connect, for example, to the 12V line from the power supply.

In my PC, you can turn on the power after turning off the computer on each usb port separately. I found this setting by not turning off the card reader after turning off the computer.

Hello,
I suggest checking the power supply with a network analyzer. For me, the mains filter in the washing machine 2x 1µH with capacitors flooded as a block in resin squeaked. After connecting the oscilloscope to the network through a small transformer, it turned out that the pins of about 2kHz have 50% of the supply voltage. After calling the power ambulance and checking everything in the switchgear, it turned out that the terminals on the line connection have poor contact, after replacing them the problem disappeared. The gentlemen from the power company at the time of arrival were not very positive about my attention, claiming that it was some whims since the power is on and the household appliances work flawlessly ...

rtvserwisant wrote:

Now I will ask a very trivial question to the author, what is the manufacturer of this computer power supply?

Hi,
Seasonic power supply model Snow Silent-1050 (SS-1050XP3) 80Plus Platinum 1050W.

Regards

Hi,
Sorry that I am refreshing the topic, but my 3rd power supply has already died ... - I gave it for warranty and I already have a new one, I paid extra and took a completely different model ...
They were all by Seasonic and each had the same effect, that is, it beeped every now and then...
Now the new power supply (different model) also squeaks .... normally miracles ....

taken wrote:

and while beeping, the load is the same all the time, so it's not the fault of the sudden load.

The load, that is current measurement . What and how did your colleague measure?