• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Monitor power cable making some sort of buzzing noise

Joined
Mar 6, 2016
Messages
52 (0.05/day)
Likes
3
Processor AMD Phenom X4 9950
Motherboard ASRock K10N78
Memory 4.00 DDR2
Video Card(s) NVIDIA Geforce GTX 750 Ti SC
Case Cooler master
#1
It's not exactly a buzzing noise, it's more like a crackling noise... it happens when I push in the cable and or take it out

My monitor is the
ASUS VG248QE 24" 1920x1080 TN Widescreen 144Hz 1ms Gaming LED Monitor - Black

I only got the monitor for my christmas, so I doubt it was that
 
Last edited:
Joined
Jul 25, 2006
Messages
5,166 (1.11/day)
Likes
3,467
Location
Nebraska, USA
System Name Brightworks Systems BWS-6 E-IV
Processor Intel Core i5-6600 @ 3.9GHz
Motherboard Gigabyte GA-Z170-HD3 Rev 1.0
Cooling Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory 16GB (2 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s) EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s) Samsung S24E650BW LED x 2
Case Fractal Design Define R4
Power Supply EVGA Supernova 550W G2 Gold
Mouse Microsoft Wireless 5000
Keyboard Microsoft Wireless Comfort 5050
Software W10 Pro 64-bit
#2
It is important to understand that monitors are not "hot swappable". That is, monitors and graphics cards are not designed to have the cables connected or disconnected when the computer or monitor is powered on. It is quite possible you accidently caused a short by causing two wrong pins to come into contact with each other, causing permanent damage to the card, monitor, or both. :(

There is no solution for this - only a strong recommendation to stop doing that! Power off the computer and unplug it from the wall. Then securely connect the cable and leave it alone.
 

newtekie1

Semi-Retired Folder
Joined
Nov 22, 2005
Messages
26,063 (5.32/day)
Likes
12,500
Location
Indiana, USA
Processor Intel Core i7 8700K@4.8GHz(Quick and dirty)
Motherboard AsRock Z370 Taichi
Cooling Corsair H110i GTX w/ Noctua NF-A14 Fans
Memory 32GB Corsair DDR4-3000
Video Card(s) ASUS Strix GTX 1080Ti
Storage 500GB Crucial MX500 + 2TB Seagate Solid State Hybrid Drive with 480GB MX200 SSD Cache
Display(s) QNIX QX2710 1440p@120Hz
Case Fractal Design Define S
Audio Device(s) Onboard is good enough for me
Power Supply Corsair HX850
Software Windows 10 Pro x64
#3
That depends on the connection used, I know HDMI is hot pluggable. I'm pretty sure Displayport is too.
 
Joined
Jul 25, 2006
Messages
5,166 (1.11/day)
Likes
3,467
Location
Nebraska, USA
System Name Brightworks Systems BWS-6 E-IV
Processor Intel Core i5-6600 @ 3.9GHz
Motherboard Gigabyte GA-Z170-HD3 Rev 1.0
Cooling Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory 16GB (2 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s) EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s) Samsung S24E650BW LED x 2
Case Fractal Design Define R4
Power Supply EVGA Supernova 550W G2 Gold
Mouse Microsoft Wireless 5000
Keyboard Microsoft Wireless Comfort 5050
Software W10 Pro 64-bit
#4
I keep hearing different things so I err on the side of caution. I note here it says with a "Warning!!..... to never connect and disconnect HDMI cables while the devices are powered on.

I note "in theory" HDMI should allow hot swapping. But it assumes the cables are wired properly and not damaged. Same with the device's connector.

In any case, I should have been more clear. Thanks.
 
Joined
Dec 6, 2005
Messages
10,695 (2.19/day)
Likes
4,504
Location
Manchester, NH
System Name Working on it ;)
Processor I7-4790K (Stock speeds right now)
Motherboard MSI Z97 U3 Plus
Cooling Be Quiet Pure Rock Air
Memory 16GB 4x4 G.Skill CAS9 2133 Sniper
Video Card(s) GIGABYTE Vega 64 (Non Reference)
Storage Samsung EVO 500GB / 8 Different WDs / QNAP TS-253 8GB NAS with 2x2Tb WD Black
Display(s) 34" LG 34CB88-P 21:9 Curved UltraWide QHD (3440*1440) *FREE_SYNC*
Case Rosewill Challenger
Audio Device(s) Onboard + HD HDMI
Power Supply Corsair HX750 (love it)
Mouse Logitech G5
Keyboard Corsair Strafe RGB & G610 Orion Red
Software Win 10 upgraded from Win 7 Pro
#5

FordGT90Concept

"I go fast!1!11!1!"
Joined
Oct 13, 2008
Messages
24,464 (6.37/day)
Likes
13,758
Location
IA, USA
System Name BY-2015
Processor Intel Core i7-6700K (4 x 4.00 GHz) w/ HT and Turbo on
Motherboard MSI Z170A GAMING M7
Cooling Scythe Kotetsu
Memory 2 x Kingston HyperX DDR4-2133 8 GiB
Video Card(s) Sapphire NITRO+ RX 590 Special Edition 8 GiB DVI + HDMI
Storage Crucial MX300 275 GB, Seagate Exos X12 TB 7200 RPM
Display(s) Samsung SyncMaster T240 24" LCD (1920x1200 HDMI) + Samsung SyncMaster 906BW 19" LCD (1440x900 DVI)
Case Coolermaster HAF 932 w/ USB 3.0 5.25" bay
Audio Device(s) Realtek Onboard, Micca OriGen+
Power Supply Enermax Platimax 850w
Mouse SteelSeries Sensei RAW
Keyboard Tesoro Excalibur
Software Windows 10 Pro 64-bit
Benchmark Scores Faster than the tortoise; slower than the hare.
#6
The only connection type in use today that, in theory, isn't hot-pluggable is VGA. In practice, it usually is. DVI/HDMI/DisplayPort are all hot-pluggable.
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
15,925 (3.84/day)
Likes
9,539
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K at stock (hits 5 gees+ easily)
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (4 x 4GB Corsair Vengeance DDR3 PC3-12800 C9 1600MHz)
Video Card(s) Zotac GTX 1080 AMP! Extreme Edition
Storage Samsung 850 Pro 256GB | WD Green 4TB
Display(s) BenQ XL2720Z | Asus VG278HE (both 27", 144Hz, 3D Vision 2, 1080p)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair HX 850W v1
Software Windows 10 Pro 64-bit
#7
This thread is about the power cable - see thread title.

A certain amount of crackling is actually normal when plugging/unplugging, but an excessive amount means a loose connection so the power cable should be swapped out then. This is especially true if it crackles just by wobbling the connector slightly.

It's actually OK to connect and disconnect video cables of any type with the PC and monitor on. At most, the PC would need a reboot if it doesn't detect the monitor properly.
 
Last edited:

newtekie1

Semi-Retired Folder
Joined
Nov 22, 2005
Messages
26,063 (5.32/day)
Likes
12,500
Location
Indiana, USA
Processor Intel Core i7 8700K@4.8GHz(Quick and dirty)
Motherboard AsRock Z370 Taichi
Cooling Corsair H110i GTX w/ Noctua NF-A14 Fans
Memory 32GB Corsair DDR4-3000
Video Card(s) ASUS Strix GTX 1080Ti
Storage 500GB Crucial MX500 + 2TB Seagate Solid State Hybrid Drive with 480GB MX200 SSD Cache
Display(s) QNIX QX2710 1440p@120Hz
Case Fractal Design Define S
Audio Device(s) Onboard is good enough for me
Power Supply Corsair HX850
Software Windows 10 Pro x64
#8
This thread is about the power cable - see thread title.
Oh shit, you're right! Yeah, a little crackle is ok when first connected, but it shouldn't do it all the time.
 
Joined
Jul 25, 2006
Messages
5,166 (1.11/day)
Likes
3,467
Location
Nebraska, USA
System Name Brightworks Systems BWS-6 E-IV
Processor Intel Core i5-6600 @ 3.9GHz
Motherboard Gigabyte GA-Z170-HD3 Rev 1.0
Cooling Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory 16GB (2 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s) EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s) Samsung S24E650BW LED x 2
Case Fractal Design Define R4
Power Supply EVGA Supernova 550W G2 Gold
Mouse Microsoft Wireless 5000
Keyboard Microsoft Wireless Comfort 5050
Software W10 Pro 64-bit
#9

eidairaman1

The Exiled Airman
Joined
Jul 2, 2007
Messages
25,818 (5.99/day)
Likes
8,874
Location
Republic of Texas (True Patriot)
System Name PCGOD
Processor AMD FX 8350@ 5.0GHz
Motherboard Asus TUF 990FX Sabertooth R2 2901 Bios
Cooling Scythe Ashura, 2×BitFenix 230mm Spectre Pro LED (Blue,Green), 2x BitFenix 140mm Spectre Pro LED
Memory 16 GB Gskill Ripjaws X 2133 (2400 OC, 10-10-12-20-20, 1T, 1.65V)
Video Card(s) AMD Radeon 290 Sapphire Vapor-X
Storage Samsung 840 Pro 256GB, WD Velociraptor 1TB
Display(s) NEC Multisync LCD 1700V (Display Port Adapter)
Case AeroCool Xpredator Evil Blue Edition
Audio Device(s) Creative Labs Sound Blaster ZxR
Power Supply Seasonic 1250 XM2 Series (XP3)
Mouse Roccat Kone XTD
Keyboard Roccat Ryos MK Pro
Software Windows 7 Pro 64
#10
make sure monitor isnt turned on, stop plugging it in and taking it out. plug in monitor at the monitor first then at the wall
 

95Viper

Moderator
Staff member
Joined
Oct 12, 2008
Messages
6,900 (1.80/day)
Likes
3,555
#11
If you are sure it is the ac power cable that is buzzing, crackling, or making any noise... replace it. Chances are it has a defect, if it does as you state.

If you are like most you should some three prong ac power cables laying around... test it with another one.
Also, make sure you are getting securely plugged in at both ends.
 
Joined
Aug 24, 2018
Messages
1 (0.00/day)
Likes
0
#12
I've noticed none of these solutions worked for me and I had the problem today and this thread was In the top results so i would like to say what worked for me

Step 1: unplug the power cable and turn it off at the plug
Step 2: plug everything back in including the power cable that is off
Step 3: turn everything back on
 
Joined
Jan 8, 2017
Messages
3,983 (4.79/day)
Likes
3,098
System Name Good enough
Processor AMD Ryzen R7 1700X - 4.0 Ghz / 1.350V
Motherboard ASRock B450M Pro4
Cooling Scythe Katana 4 - 3x 120mm case fans
Memory 16GB - Corsair Vengeance LPX
Video Card(s) OEM Dell GTX 1080
Storage 1x Samsung 850 EVO 250GB , 1x Samsung 860 EVO 500GB
Display(s) 4K Samsung TV
Case Zalman R1
Power Supply 500W
#13
It is quite possible you accidently caused a short by causing two wrong pins to come into contact with each other
Pretty much impossible for that to happen with connectors like HDMI or DP, the pins do not stick out and it's actually quite difficult for them to come into contact with anything else.
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
15,925 (3.84/day)
Likes
9,539
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K at stock (hits 5 gees+ easily)
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (4 x 4GB Corsair Vengeance DDR3 PC3-12800 C9 1600MHz)
Video Card(s) Zotac GTX 1080 AMP! Extreme Edition
Storage Samsung 850 Pro 256GB | WD Green 4TB
Display(s) BenQ XL2720Z | Asus VG278HE (both 27", 144Hz, 3D Vision 2, 1080p)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair HX 850W v1
Software Windows 10 Pro 64-bit
#14
It's not exactly a buzzing noise, it's more like a crackling noise... it happens when I push in the cable and or take it out
This is exactly what should happen and there's nothing wrong with your monitor. You'll get the crackling whether the monitor is on or off (standby).

The noise is the sound of arcing, which happens when you make or break a circuit. It will be louder and more obvious when you disconnect the monitor while it's running. You don't wanna do this, because that arcing represents large voltage spikes which aren't good for it. If the conductors were exposed, you would likely see small sparks too. This arcing effect is caused by induction, which is the opposite of capacitance. Have a Google if you wanna know more about it. :)

You don't see this arcing effect with signal cables plugged/unplugged, because the current and power are really tiny.
 
Last edited:
Joined
Jul 16, 2014
Messages
2,764 (1.59/day)
Likes
1,439
Location
SE Michigan
System Name Dumbass
Processor AMD-9370BE @4.6
Motherboard ASUS SABERTOOTH 990FX R2.0 +SB950
Cooling CM Nepton 280L
Memory G.Skill Sniper 16gb DDR3 2400
Video Card(s) GreenTeam 1080 Gaming X 8GB
Storage C:\SSD (240GB), D:\Seagate (2TB), E:\Western Digital (1TB)
Display(s) 1x Nixeus NX_EDG27, 2x Dell S2440L (16:9)
Case Phanteks Enthoo Primo w/8 140mm SP Fans
Audio Device(s) onboard (realtek?) SPKRS:Logitech Z623 200w 2.1
Power Supply Corsair HX1000i
Mouse Logitech G700s
Keyboard Logitech G910 Orion Spark
Software windows 10
Benchmark Scores https://i.imgur.com/aoz3vWY.jpg?2
#15
the crackling could be a build up of static electricity, or, there might be some internal bare wires that might too close together causing a spark. Suddenly applying power can do it too
 
Joined
Jul 25, 2006
Messages
5,166 (1.11/day)
Likes
3,467
Location
Nebraska, USA
System Name Brightworks Systems BWS-6 E-IV
Processor Intel Core i5-6600 @ 3.9GHz
Motherboard Gigabyte GA-Z170-HD3 Rev 1.0
Cooling Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory 16GB (2 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s) EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s) Samsung S24E650BW LED x 2
Case Fractal Design Define R4
Power Supply EVGA Supernova 550W G2 Gold
Mouse Microsoft Wireless 5000
Keyboard Microsoft Wireless Comfort 5050
Software W10 Pro 64-bit
#16
Pretty much impossible for that to happen with connectors like HDMI or DP, the pins do not stick out and it's actually quite difficult for them to come into contact with anything else.
It is easier than you think. While I agree they are designed specifically to minimize the possibility of such occurrences, that does not stop some users from using too much force when not properly aligned and the connectors don't just slip in.

Note too this 5 month old dormant thread is about the power cable. Not HDMI or DP. Regardless, I stand by what I said. And please note I said it was "possible" not that it was "likely".
 
Joined
Oct 2, 2004
Messages
13,791 (2.60/day)
Likes
6,928
#17
It is important to understand that monitors are not "hot swappable". That is, monitors and graphics cards are not designed to have the cables connected or disconnected when the computer or monitor is powered on. It is quite possible you accidently caused a short by causing two wrong pins to come into contact with each other, causing permanent damage to the card, monitor, or both. :(

There is no solution for this - only a strong recommendation to stop doing that! Power off the computer and unplug it from the wall. Then securely connect the cable and leave it alone.
That's just absurd nonsense. Monitors can be connected or disconnected at any time. Be it VGA, DVI, HDMI or DisplayPort connection.

As for the crackling, signal cables still have certain power going through, if cable is bad it's possible there is something shorting or causing slight induction effect or something. Get a new quality cable. Or if you already have some other, try it.
 
Joined
Jul 25, 2006
Messages
5,166 (1.11/day)
Likes
3,467
Location
Nebraska, USA
System Name Brightworks Systems BWS-6 E-IV
Processor Intel Core i5-6600 @ 3.9GHz
Motherboard Gigabyte GA-Z170-HD3 Rev 1.0
Cooling Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory 16GB (2 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s) EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s) Samsung S24E650BW LED x 2
Case Fractal Design Define R4
Power Supply EVGA Supernova 550W G2 Gold
Mouse Microsoft Wireless 5000
Keyboard Microsoft Wireless Comfort 5050
Software W10 Pro 64-bit
#18
In theory, yes. In practice, not always. FTR, the VGA standard does not require they be hot swappable. And for sure not all cables are made equally. Also, it is not uncommon for monitors to lose sync.

While in theory, no damage is likely, it is still good practice to at least power down the monitor before yanking out cables.
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
15,925 (3.84/day)
Likes
9,539
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K at stock (hits 5 gees+ easily)
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (4 x 4GB Corsair Vengeance DDR3 PC3-12800 C9 1600MHz)
Video Card(s) Zotac GTX 1080 AMP! Extreme Edition
Storage Samsung 850 Pro 256GB | WD Green 4TB
Display(s) BenQ XL2720Z | Asus VG278HE (both 27", 144Hz, 3D Vision 2, 1080p)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair HX 850W v1
Software Windows 10 Pro 64-bit
#19
Everyone, why are you talking about video cables? The OP is talking about the power cable to his monitor (see thread title) and I gave him the definitive answer in post 14. Check it out. :)
 
Joined
Nov 21, 2010
Messages
1,054 (0.34/day)
Likes
357
Location
Right where I want to be
System Name Ratchet
Processor Ryzen 1700X
Motherboard Crosshair VI Hero
Cooling Custom Loop, Ek blocks 280mm Rad
Memory 16gb TridentZ RGB DDR4 3000
Video Card(s) 1x ASUS STRIX RX480 OC(flashed to 580)
Storage JBOD
Display(s) HP ZR24w
Audio Device(s) Asus Xonar STX II
Power Supply Seasonic X-series Gold 850W
Mouse Corsair Scimitar
Keyboard Corsair K70 Rapidfire
Software Windows 10
#20
didn't realize this was a necro, I withdrew my comment but so much wrong info from bill doesn't matter how many times you use "in theory", "possible" it's still wrong or highly unlikely. HPSD have been in the HDMI/DP specs since ver.1 and the connectors are recessed and keyed.
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
15,925 (3.84/day)
Likes
9,539
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K at stock (hits 5 gees+ easily)
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (4 x 4GB Corsair Vengeance DDR3 PC3-12800 C9 1600MHz)
Video Card(s) Zotac GTX 1080 AMP! Extreme Edition
Storage Samsung 850 Pro 256GB | WD Green 4TB
Display(s) BenQ XL2720Z | Asus VG278HE (both 27", 144Hz, 3D Vision 2, 1080p)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair HX 850W v1
Software Windows 10 Pro 64-bit
#21
didn't realize this was a necro
Duh, neither did I! And what's more ridiculous is that I'd posted in it back in 2016, see post 7. :laugh:
 

Jesus F

New Member
Joined
Jan 20, 2019
Messages
3 (0.03/day)
Likes
0
#22
This is exactly what should happen and there's nothing wrong with your monitor. You'll get the crackling whether the monitor is on or off (standby).

The noise is the sound of arcing, which happens when you make or break a circuit. It will be louder and more obvious when you disconnect the monitor while it's running. You don't wanna do this, because that arcing represents large voltage spikes which aren't good for it. If the conductors were exposed, you would likely see small sparks too. This arcing effect is caused by induction, which is the opposite of capacitance. Have a Google if you wanna know more about it. :)

You don't see this arcing effect with signal cables plugged/unplugged, because the current and power are really tiny.
So if my monitor power box makes a rattle, there’s nothing wrong with it?
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
15,925 (3.84/day)
Likes
9,539
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K at stock (hits 5 gees+ easily)
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (4 x 4GB Corsair Vengeance DDR3 PC3-12800 C9 1600MHz)
Video Card(s) Zotac GTX 1080 AMP! Extreme Edition
Storage Samsung 850 Pro 256GB | WD Green 4TB
Display(s) BenQ XL2720Z | Asus VG278HE (both 27", 144Hz, 3D Vision 2, 1080p)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair HX 850W v1
Software Windows 10 Pro 64-bit
#23
So if my monitor power box makes a rattle, there’s nothing wrong with it?
That’s kinda vague, can’t tell anything by that. If you have a technical problem that you want help with, you’re better off starting your own thread.
 

Jesus F

New Member
Joined
Jan 20, 2019
Messages
3 (0.03/day)
Likes
0
#24
That’s kinda vague, can’t tell anything by that. If you have a technical problem that you want help with, you’re better off starting your own thread.
Well what the guy described what was happening is the same thing I’m experiencing but I just wanted to be sure that what you put on your post was basically that the rattle is normal
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
15,925 (3.84/day)
Likes
9,539
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K at stock (hits 5 gees+ easily)
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (4 x 4GB Corsair Vengeance DDR3 PC3-12800 C9 1600MHz)
Video Card(s) Zotac GTX 1080 AMP! Extreme Edition
Storage Samsung 850 Pro 256GB | WD Green 4TB
Display(s) BenQ XL2720Z | Asus VG278HE (both 27", 144Hz, 3D Vision 2, 1080p)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair HX 850W v1
Software Windows 10 Pro 64-bit
#25
The slight crackle as you plug in a power cable that’s connected to the mains is normal, yes. It’s caused by arcing, which should be kept to a minimum.
 
Top