Eliminating noise/hum/buzz sound

AMDman · Sep 28, 2004, 09:43 AM

I have a MSI K7N2 Delta (Nforce2 ultra 400+MCP), but when I hear the sound that comes from SB Live, there is a buzz sound in background, especially on right channel. Speaker that I use is Altec Lansing ACS 45.1. That buzz (like a bee's sound) is still there even if I do these:
1. Change the sound from SB Live to onboard sound (ALC655)
2. Releasing the mobo from case (trying not to make any unnecessary grounding), and removed all other devices (VGA, etc)
3. Change the power supply
4. I use an UPS, but if I bypass (the cord get straight to wall outlet), they still buzz
That sound is still there even I haven't start the pc (but the ac cord is plugged), but the sound dissapear if I unplugg ac cord from outlet (so in this case, electricity only comes from UPS' inverter). I've tried to use another speaker, but there was no other 'good' speaker that I can trust here.
Should I blame the MSI board or the ac?
The rare thing is, I used the same SB Live and ACS 45.1 on my old computer (Abit KT7E), and there was no such noise in any or other way.

**dj_stick** · Sep 28, 2004, 11:05 AM

this is a grounding issue, what you are hearing is the power frequency… check the power cable you are using, also try another set if speakers

AMDman · Sep 28, 2004, 02:20 PM

I've tried another cables too, maybe all those cables are not good... and still can't find another speakers. If it's grounding problem, what should I do then?
Thanks before

classic_leon · Sep 28, 2004, 02:37 PM

You check if the bracket of soundcard touches the jacks. I guess static which is from mainboard comes to the jack of output. If that was this problem, you put the bracket into the correct position.

AMDman · Sep 29, 2004, 06:18 AM

We'll they don't touch each other, and my SB Live ring-jacks isolated by plastic

free_refil · Sep 29, 2004, 06:46 AM

Mine did this too, usually fiddling around with the front speaker jack fixed it but it'd be back in a few days. What I did was remove my PCI card and put electrical tape all around the silver bracket as well as the case where the metal ran across dividing the two PCI slots. Then there were no issues of the jack grounding to the case nor the card grouding to the case.

AMDman · Sep 30, 2004, 12:32 AM

Well, I tried your suggestion yesterday, but it didn't help. I've tried to start the motherboard *outside* the case, but the buzz was still there. Even without warm boot (while the power cord has plugged), the buzz started to sing.

**dj_stick** · Sep 30, 2004, 01:18 AM

try moving the computer to another room, using a different power socket

free_refil · Sep 30, 2004, 08:58 AM

Also, do your speakers do this without the audio jacks being plugged into the board?

AMDman · Sep 30, 2004, 11:42 AM

Without plugging the jacks into the board, the speakers keep silent, maybe just a hiss like a wind at high volume. I think it's because the bad electricity in my room. I've moved to a new house, but at the old one, there was no such noise. I've tried to move the cpu to another room, the noise is not as loud as in my room before, but not eliminated completely... But why can't a ups filter that bad electricity? Thanks before for all.

free_refil · Sep 30, 2004, 03:27 PM

Well, it depends on how good your UPS is. Also, if there are things like refrigerators or dryer's running off the same breaker that the PC is plugged into, the noise could be comming from there. Also just having those type of appliances in the same vecinity as the PC could do it. I would try to purchase a nice power strip with noise suppression. It could also just be your PSU in your PC that's causing the noise. I believe they have inline noise supressors for AC lines that you could also purchase.

free_refil · Sep 30, 2004, 03:29 PM

Also try unplugging large, noisy appliances like the fridge one by one. I would probably be easier to just trip the breaker that the appliance is riding on one by one until you find out what breaker is causing the noise, then finding which appliance on that breaker is causing the noise.

AMDman · Oct 1, 2004, 12:51 AM

Ok thanks! Trying to find that device without disturbing other people...

Sep 28, 2004, 09:43 AM	#1
AMDman DriverHeaven Junior Member Join Date: Sep 2004 Location: Indonesia Posts: 34 Rep Power: 0	How to eliminate noise/hum/buzz sound I have a MSI K7N2 Delta (Nforce2 ultra 400+MCP), but when I hear the sound that comes from SB Live, there is a buzz sound in background, especially on right channel. Speaker that I use is Altec Lansing ACS 45.1. That buzz (like a bee's sound) is still there even if I do these: 1. Change the sound from SB Live to onboard sound (ALC655) 2. Releasing the mobo from case (trying not to make any unnecessary grounding), and removed all other devices (VGA, etc) 3. Change the power supply 4. I use an UPS, but if I bypass (the cord get straight to wall outlet), they still buzz That sound is still there even I haven't start the pc (but the ac cord is plugged), but the sound dissapear if I unplugg ac cord from outlet (so in this case, electricity only comes from UPS' inverter). I've tried to use another speaker, but there was no other 'good' speaker that I can trust here. Should I blame the MSI board or the ac? The rare thing is, I used the same SB Live and ACS 45.1 on my old computer (Abit KT7E), and there was no such noise in any or other way. __________________ [color=palegreen]there was four ways to reach 'genuineness': religion, philosophy, science, and literature, and everyone choose their own path[/color] Last edited by AMDman; Sep 28, 2004 at 09:52 AM. Reason: change the title

Sep 28, 2004, 02:20 PM	Thread Starter #3
AMDman DriverHeaven Junior Member Join Date: Sep 2004 Location: Indonesia Posts: 34 Rep Power: 0	I've tried another cables too, maybe all those cables are not good... and still can't find another speakers. If it's grounding problem, what should I do then? Thanks before __________________ [color=palegreen]there was four ways to reach 'genuineness': religion, philosophy, science, and literature, and everyone choose their own path[/color]

Sep 28, 2004, 02:37 PM	#4
classic_leon HardwareHeaven Senior Member Join Date: Aug 2004 Location: Wu Han, Hu Bei, P.R.China Posts: 1,238 Rep Power: 0	You check if the bracket of soundcard touches the jacks. I guess static which is from mainboard comes to the jack of output. If that was this problem, you put the bracket into the correct position. __________________ Fashion keeps us alive. YouP-PAX Please visit http://www.A-PAX.co.uk to discuss the computer mods. The latest YouP PAX modded drivers are provided on the site.

Sep 29, 2004, 06:18 AM	Thread Starter #5
AMDman DriverHeaven Junior Member Join Date: Sep 2004 Location: Indonesia Posts: 34 Rep Power: 0	We'll they don't touch each other, and my SB Live ring-jacks isolated by plastic __________________ [color=palegreen]there was four ways to reach 'genuineness': religion, philosophy, science, and literature, and everyone choose their own path[/color]

Sep 29, 2004, 06:46 AM	#6
free_refil DriverHeaven Lover Join Date: Mar 2004 Location: Stationed in Bahrain (Middle East) Posts: 100 Rep Power: 0	Mine did this too, usually fiddling around with the front speaker jack fixed it but it'd be back in a few days. What I did was remove my PCI card and put electrical tape all around the silver bracket as well as the case where the metal ran across dividing the two PCI slots. Then there were no issues of the jack grounding to the case nor the card grouding to the case. __________________ P4 2.8C 1:1 225MHz FSB Abit IC-7 Max 3 BIOS = F1, Strengthened, Auto x3 Geil GD @ 2/7/4/4 2.7v R9800 Pro 400/375 36.6 Raptors Raid 0 on ICH-5 CPU Cooling: SP-94 80mm Panaflo VGA Cooling: ZM-80C & ZM-OP1 Chipset Cooling: MCX-159

Sep 30, 2004, 12:32 AM	Thread Starter #7
AMDman DriverHeaven Junior Member Join Date: Sep 2004 Location: Indonesia Posts: 34 Rep Power: 0	Well, I tried your suggestion yesterday, but it didn't help. I've tried to start the motherboard outside the case, but the buzz was still there. Even without warm boot (while the power cord has plugged), the buzz started to sing. __________________ [color=palegreen]there was four ways to reach 'genuineness': religion, philosophy, science, and literature, and everyone choose their own path[/color]

Sep 30, 2004, 08:58 AM	#9
free_refil DriverHeaven Lover Join Date: Mar 2004 Location: Stationed in Bahrain (Middle East) Posts: 100 Rep Power: 0	Also, do your speakers do this without the audio jacks being plugged into the board? __________________ P4 2.8C 1:1 225MHz FSB Abit IC-7 Max 3 BIOS = F1, Strengthened, Auto x3 Geil GD @ 2/7/4/4 2.7v R9800 Pro 400/375 36.6 Raptors Raid 0 on ICH-5 CPU Cooling: SP-94 80mm Panaflo VGA Cooling: ZM-80C & ZM-OP1 Chipset Cooling: MCX-159

Sep 30, 2004, 11:42 AM	Thread Starter #10
AMDman DriverHeaven Junior Member Join Date: Sep 2004 Location: Indonesia Posts: 34 Rep Power: 0	Without plugging the jacks into the board, the speakers keep silent, maybe just a hiss like a wind at high volume. I think it's because the bad electricity in my room. I've moved to a new house, but at the old one, there was no such noise. I've tried to move the cpu to another room, the noise is not as loud as in my room before, but not eliminated completely... But why can't a ups filter that bad electricity? Thanks before for all. __________________ [color=palegreen]there was four ways to reach 'genuineness': religion, philosophy, science, and literature, and everyone choose their own path[/color]

Sep 30, 2004, 03:27 PM	#11
free_refil DriverHeaven Lover Join Date: Mar 2004 Location: Stationed in Bahrain (Middle East) Posts: 100 Rep Power: 0	Well, it depends on how good your UPS is. Also, if there are things like refrigerators or dryer's running off the same breaker that the PC is plugged into, the noise could be comming from there. Also just having those type of appliances in the same vecinity as the PC could do it. I would try to purchase a nice power strip with noise suppression. It could also just be your PSU in your PC that's causing the noise. I believe they have inline noise supressors for AC lines that you could also purchase. __________________ P4 2.8C 1:1 225MHz FSB Abit IC-7 Max 3 BIOS = F1, Strengthened, Auto x3 Geil GD @ 2/7/4/4 2.7v R9800 Pro 400/375 36.6 Raptors Raid 0 on ICH-5 CPU Cooling: SP-94 80mm Panaflo VGA Cooling: ZM-80C & ZM-OP1 Chipset Cooling: MCX-159

Sep 30, 2004, 03:29 PM	#12
free_refil DriverHeaven Lover Join Date: Mar 2004 Location: Stationed in Bahrain (Middle East) Posts: 100 Rep Power: 0	Also try unplugging large, noisy appliances like the fridge one by one. I would probably be easier to just trip the breaker that the appliance is riding on one by one until you find out what breaker is causing the noise, then finding which appliance on that breaker is causing the noise. __________________ P4 2.8C 1:1 225MHz FSB Abit IC-7 Max 3 BIOS = F1, Strengthened, Auto x3 Geil GD @ 2/7/4/4 2.7v R9800 Pro 400/375 36.6 Raptors Raid 0 on ICH-5 CPU Cooling: SP-94 80mm Panaflo VGA Cooling: ZM-80C & ZM-OP1 Chipset Cooling: MCX-159

Oct 1, 2004, 12:51 AM	Thread Starter #13
AMDman DriverHeaven Junior Member Join Date: Sep 2004 Location: Indonesia Posts: 34 Rep Power: 0	Ok thanks! Trying to find that device without disturbing other people... __________________ [color=palegreen]there was four ways to reach 'genuineness': religion, philosophy, science, and literature, and everyone choose their own path[/color]