Audio Output from Monitor Buzzing Noise Problem!

passion4tech · 10 Apr 2016

Hey guys I need help with my Acer H257HU Monitor audio output making buzzing noise to external speakers. Whenever I play games like Borderlands 2 or an older game Burnout Paradise I hear a buzzing noise coming from my external computer speakers plugged into audio output from monitor. I made sure the green audio cable is plugged all the way in monitor's audio output and it still makes buzzing noise. Listen to it for yourself. It is really annoying noise. I am 100% sure there is nothing wrong with my Acer H257HU Monitor.

Here is the recorded audio clip of the buzzing noise I hear from monitor audio output to external computer speakers.

https://drive.google.com/file/d/0B-6...ew?usp=sharing

Acer H257HU Monitor.
Case: Corsair Graphite Series 380T
CPU: i7 4790k 4.00GHz Quad Core
Motherboard: Asus H97I-Plus
Ram: 8GB
Hard Drives: 500GB HDD and 120 GB SSD Kingston
Power Supply: Corsair RM650 Watt (Modular)
Video Card: MSI R9 270 Twin Frozr 2GB GDDR5
OS: Windows 7 64Bit
Water Cooler: Corsair H60 CPU water cooler
Monitor: Acer H257HU

passion4tech · 11 Apr 2016

I posted the google drive link so that you guys can hear what the buzzing noise sounds like.

fireberd · 14 Apr 2016

That sounds like either an open wire connection or interference from the monitor to the speakers.

Does the speakers sound like that is disconnected from the monitor and powered on?

anwaypasible · 14 Apr 2016

probably nothing more than a ground loop between the external speakers & the monitor.
which one has the problem can't be determined without doing electrical tests.
but if you keep using those speakers plugged into the monitor, the speakers and|or monitor could die prematurely.

**edit**

either of these products are supposed to get rid of such a problem:
Amazon.com: BEHRINGER MICROHD HD400: Musical Instruments

Amazon.com: PYLE-PRO PHE300 2-Channel Hum/Noise Destroyer with TRS Inputs and Outputs: Musical Instruments

you'll need adaptors that take a stereo 3.5mm to two mono 1/4 inch plug (female 3.5mm to two mono male 1/4)
then you'll need another adaptor to take the 1/4 mono plugs back to a stereo 3.5mm plug (2 male 1/4 mono to stereo 3.5mm male).

i mean you could always try different external speakers, but the new speakers might simply hide the fault of the monitor because the speakers got a higher tolerance for it.
therefore you don't really know which one is the problem.

fireberd · 15 Apr 2016

I'm a former guitar amplifier tech, this does not sound like the usual "ground loop hum" (60 Hz AC). I doubt that one of the "Hum eliminators" will fix this problem.

anwaypasible · 15 Apr 2016

a buzz is an electrical isolation issue no matter what it sounds like.
plain & simple.

you've never-ever heard a ground loop from a computer that changes whenever you click on something & it executes on the processor?

fireberd · 15 Apr 2016

A ground loop hum is a "difference in potential" between the AC power grounds on two separate devices. The sound I hear is not what I would call a ground loop hum but an "open" on one of the signal or ground lines. I've only worked in Electronics (and RF) since 1961.

We (musicians) fight ground loop hums hooking various AC powered amps and devices (e.g. effects units) together. When I worked as the Ampeg factory service tech in Nashville that was one of the issues customers complained about. I keep an Ebtech Hum Eliminator for use, if needed, in my home recording studio.

anwaypasible · 15 Apr 2016

i've got zero problem shaming 55 years of said experience.

a difference in potential is either a slew or resistance issue.
a ground loop is because the ground simply has nowhere else to go & is traveling the path of least resistance.
(could be a broken ground connection, could be an abundance of ground)

whatever you think you know because you can remember what you are told, it's not the same thing as engineering.

proof of concept, you run a laptop in a vehicle with the power adapter connected to a power invertor that is connected to the vehicle's electrical system.
you plug the radio's power into the vehicles electrical system.
you plug the line out of the laptop into the vehicle's radio & there's a ground loop that changes in noise whenever the processor load goes up (such as opening a program or folder).
there isn't an earth on a vehicle's electrical system (the tires are rubber & you can't make a solid enough connection with the frame or body panels or anything else of the vehicle).

thus, when the ground is supposed to bleed to earth it has absolutely no where to go & travels the path of least resistance.
that is why you can touch a ground & make the noise go away, because the circuit will use your body as earth.

next you are going to confuse the concept of how DC suddenly doesn't have a negative.

fireberd · 15 Apr 2016

I totally agree with you. Just that what I call a "ground loop hum" is apparently not the same as what you define it as.

I am not a degreed EE. But come from many years of experience in Electronics and computers. I also held a General Class Amateur license and a 2nd Class FCC Radiotelephone license.

I'm out of here. No need to get in a "Ping" contest. More important things to do today.

anwaypasible · 15 Apr 2016

you totally agree, yet you still fail to acknowledge what a ground loop is.
it loops around because it has no where to go.