Question about Computers & Internet

1 Answer

New replacement power supply makes continuous high-pitch sound

Hi
I just hooked up a replacement fan/power supply for my computer. It gives off a continous very high pitched sound and also an interference type sound. Could the wiring from the power supply be incorrect?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

If the computer turns and works (other than the noise) then the wiring is correct. The ATX plug should be keyed so it is almost impossible to hook up incorrectly, and the wiring is for the most part standardized. However, there could be a problem if it is an older computer and your replacement power supply is from a Dell. Dell ATX power supplies, mostly from the PII to PIII era were not wired to the standard ATX pinouts. So, if you put a non-Dell power supply in an older Dell, or if you put an older Dell power supply in a non-Dell PC of any age, your wiring will not be correct. Usually incorrect wiring means either it fries or just doesn't start at all.

Specialized PC's or high end servers may also use non standard power connectors.

If you paid less than $40.00 for the power supply, the problem is most likely just a bad / poorly made power supply. Most of the budget power supplies are extremely cheaply made. They will sometimes have a lot of noise/whine/hum, and often fail quickly. In a lot of cases you will be able to tell the quality of the power supply just by the weight. The cheap ones are usually as light as can be. A good power supply will have some heft to it, as it will have large heatsinks and heavy duty components. If you have a Radio Shack nearby you could pick up a Thermaltake 300 to 450 watt power supply and try it and see if the problem goes away. They have a pretty flexible return policy. If you have a high quality power supply, it could be that you just got a bad one. Try another to confirm. If you try a Thermaltake and it still whines (and never made noise before this problem came up) then it could be that other components in the PC are near failure--possible as a result of your previously failing power supply. My experience though has been that unless the power supply popped (as in literally blew out) the motherboard and other internals aren't usually affected.
I am assuming here that the computer is starting up. If not, make sure that that all the necessary power leads are hooked up. Newer motherboards may have have a 20 or 24 pin main ATX power connector. They may also have a secondary 4-pin 12v connector to power the CPU. If you are mixing a really old or new revision power supply with an opposite age motherboard there may be a problem of not having the appropriate connections available.

Finally, if you are under-powered, you could also experience problems. What is the wattage of your new power supply and what type of computer/CPU? If you are running a 200 watt power supply to power a modern motherboard/CPU you may not be able to supply the power needed. This could result in a stressed power supply, which may make noise, or just power offs or system instability.

I very much recommend spending the extra dollars for a well made power supply. I have replaced many of the $20.00 units. Even if they say they are 350 or 450+ watts, they don't hold up. Often the computer will start random power offs and then the supply will fail completely. A good supply will usually come with a 5 year warranty and will be generally problem free.

Here is a link to a wiring diagram for the ATX plug--just to be complete.
http://pinouts.ru/Power/atxpower_pinout.shtml

Posted on Oct 03, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Samsung HLS-6167W shuts off every few minutes. I replaced the lamp 3x and recently the lamp ballast and #2 fan. Problem continues, so should I look at the power supply board or the color wheel?


if the sounds a high pitch squeal !! I had an ole tv that did that when u watched it , finally one day the dang power supply up and gave out !! so that must be what the noise was coming from all that time !!!

Dec 20, 2016 | Samsung Televison & Video

1 Answer

My tv powers on displays the LG logo then makes a high pitched squeal sound from speakers and then flashes on screen (strobe light effect) does not display picture or sound.


LCD TV Repair Tutorial - LCD TV Parts Overview, Common ...

? 11:05
https://www.youtube.com/watch?v=tS4sIpdajVw
Aug 23, 2013 - Uploaded by ShopJimmy.com
Repair review of common LCD TV Problems and Repair Solutions ... input the tv is set to it begins making a high pitched whiningsound. .... I have a LG 47LN5750 that powers on, flashes a good picture for about 1/2 second, then goes dark. ... hi my samsung tvis not turning on is black. and I just replace the ...

#Treat At Home high pitched whine from plasma tv Tinnitus ...

www.aspenridgerentals.com/tinnituscure/?...high%20pitched%20whine%...
LG 50PK540 plasma TV Repair power supply EAY60968801 Part 1-2 ... Sanyo DP42849 with high pitched squeal after replacing power supply. ... In my second daily fix video, I solve a mystery that was making me having to turn off my speakers before I went to be ... The flash is accompanied by an high pitched sound.

TV not turning on; making high-pitched sounds - Tom's ...



Dec 16, 2015 | LG 55LE5400 TV

1 Answer

High pitch screeching on my pc cannot fix thru speakers check ok


Unusual noises coming from your computer can mean anything from serious trouble to no problems at all. The uncertainty, together with the expense of computer hardware components -- not to mention the risk of losing data and being without your computer -- make it important for you to investigate any unusual sounds as soon as they come to your attention.

Normal Sounds
Not every high-pitched sound coming from your computer suggests a problem. Computers also generate a variety of sounds as part of their normal operation. In particular, anything that spins can easily make noise. This includes cooling fans and the hard drive. In the case of fans, their sound sometimes grows louder when the computer works harder because it needs to run the fans at a faster speed in order to dissipate the extra heat from the higher level of operation. You probably don't need to concern yourself with an unknown high-pitched sound unless you have used the computer for a while and the sound is new. b> Capacitors Capacitors sometimes make a high-pitched buzzing sound, either when under a high load or when defective. In the latter case, faulty construction can cause gas to build up inside the capacitor, which then vents under pressure and sometimes creates an audible noise. Defective capacitors can damage or destroy other hardware. f you suspect a bad capacitor, or don't know what else it might be, give your computer an inspection. b> Capacitors Inspection b> Your computer has capacitors all over it, including on the motherboard and on nearly everything that plugs into the motherboard, so tracking down a bad capacitor can take some time -- especially if you don't know whether a capacitor is actually causing the problem. Many capacitors look like tiny little soda cans and smaller ones look like squat cylinders. Failed capacitors usually bulge out at the top or have crusty residue around them. Be sure to check not just the motherboard but also any other hardware components with visible capacitors on them. If you find a bad capacitor, keep looking in case you find more. Afterward, don't use your computer again until you repair or replace the faulty hardware. Fans b> The bearings and motors on fans sometimes go bad. If this happens then the fan may begin to whine, whether or not it stops working. If feasible, open the side panel of your computer tower with the system running and try to pinpoint the exact source of the sound. If you can determine that the noise is coming from a fan, power down the computer and replace that fan. b> Power Supply Unit b> Power supply units sometimes make a high-pitched whining or droning sound; it can happen continuously, when you perform certain tasks on the computer or when you take the power load high enough. This can happen either because of cheap construction or because the unit is too close to maximum capacity. As you would do to check the fans, open the side panel while the computer is running and put your ear up to the PSU. If this is where the noise is coming from, replace the unit with a high-quality model and upgrade to a higher power output if you need to do so. Hope this helps.

Jan 08, 2013 | Acer Aspire Z3100 (2771498) 21.5 in. PC...

1 Answer

Computer had a high pitched noise now wont load up only the mouse is on screen


hi
check your CPU fan if its OK
its may be your hard disk sound
sometime power supply fans

May 29, 2010 | Computers & Internet

2 Answers

Dell tower desktop Dimension 5100. Tower makes whistling sound.


sounds like it could be a bearing in your hard drive. is this problem constant? If so, I would open up the tower and disconnect the hard drive and then power up the tower again. if the sound goes away--you need to get a new hard drive. If not, you could have some dust bunnies in your cooling fan.

Jun 15, 2009 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

RCA VCR makes high pitched whining noise when it's on...


The power supply is starting to fail. There are a number of capacitors in the power supply that need to be replaced. A local repair shop should be able to fix this easily. Figure on $10 max for parts.

Dan

May 05, 2009 | RCA VR508 VCR

1 Answer

Whining sound with xion 800 watt power supply.


There is a fan insine the power supply, and also a fan on the CPU. Occasionally there is also a fan on the chassis of the computer itself.

Turn on the computer, take the case off, and listen to identify the source of the noise. If it's inside the PSU, return it and get a new one.

Feb 20, 2009 | XION PSU XION|XON-800R14N 800W RT

1 Answer

Mother board problem


The noise must be coming from the power supply. The only thing running before you press the power on button is the PSU.
Unplug the power cord on the PSU. Check the back of the PSU for a red slide switch. Make sure it is set for 115v. Than disconnect the main power from the motherboard. Plud in the power cord, (still hear the high pitch noise?). Swap out your power supply.

Mike

Apr 09, 2008 | ECS RS400-A (V1.0) Motherboard

1 Answer

High pitch frequency comming from the cpu


might be the fan on the processor or in your actual hardrive there are actual discs that spin ,this is most likely to be the problem, and sorry no solution 2 that except gettin a new hardrive.

Jan 15, 2008 | Computers & Internet

Not finding what you are looking for?
Computers & Internet Logo

Related Topics:

713 people viewed this question

Ask a Question

Usually answered in minutes!

Top Computers & Internet Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

kakima

Level 3 Expert

102366 Answers

David Payne
David Payne

Level 3 Expert

14161 Answers

Are you a Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...