HUM sound

  • Thread starter Thread starter dkb
  • Start date Start date
D

dkb

I have Samsung 26" monitor cum TV and I get a continuous Humming sound
from its speakers (and it was not there previously). When I minimize the
window the sound gets reduced. Tried to lower the volume nothing
happens. Even tried to keep 'No Sounds' in the sound scheme in the
sounds and audio devices properties---but failed. I want silence. Could
it be achieved? Please guide.
dkb
 
most likely it's the flyback transformer, and no way to really get rid of the
noise except to get a new monitor, the price of repair would most likely be
the same as buying a new monitor.
 
Thanks for the suggestion. My monitor is still under warranty. I shall
have to report to SAMSUNG.
dkb
 
dkb said:
I have Samsung 26" monitor cum TV and I get a continuous Humming
sound from its speakers (and it was not there previously). When I
minimize the window the sound gets reduced. Tried to lower the
volume nothing happens. Even tried to keep 'No Sounds' in the sound
scheme in the sounds and audio devices properties---but failed. I
want silence. Could it be achieved? Please guide.
Click to expand...

Does the monitor speakers make this sound if the sound cable is not
connected to the computer?
What if connected to another device (ipod, another computer, etc.)?

I have seen this hum sound come from a computer sound card - even though in
all other ways the computers sound card seemed to be working fine.
 
You should check to make sure before send it in. Disconnect these speaker and
get regular "stand-alone" speakers. The "hum" could also be coming from the
PC's power supply.
 
Go to the audio devices (double click the speaker in tray). Reduce the
sliders one at a time and see if one reduces the humm. If not you may have a
ground loop. Does the TV have a two pin plug? (no ground pin) If so you need
to ground the two together. If you don't have audio from the computer
connected to the TV you need to do that.
 
I have Samsung 26" monitor cum TV and I get a continuous Humming sound from
its speakers (and it was not there previously). When I minimize the
Click to expand...


Run a "grounding" wire between the PC's power supply
(use a screw as a metal post) and any metal part on the
back of the TV.

Ed
 
I have Samsung 26" monitor cum TV and I get a continuous Humming sound
from its speakers (and it was not there previously). When I minimize the
window the sound gets reduced. Tried to lower the volume nothing
happens. Even tried to keep 'No Sounds' in the sound scheme in the
sounds and audio devices properties---but failed. I want silence. Could
it be achieved? Please guide.
dkb
Click to expand...

Why ask HERE? This is clearly a non-windows pure hardware problem and
as such does NOT belong here.

Ask elsewhere
 
dkb said:
I have Samsung 26" monitor cum TV and I get a continuous Humming sound
from its speakers (and it was not there previously). When I minimize the
window the sound gets reduced. Tried to lower the volume nothing
happens. Even tried to keep 'No Sounds' in the sound scheme in the
sounds and audio devices properties---but failed. I want silence. Could
it be achieved? Please guide.
dkb
Click to expand...

I was waiting for a response from the SAMSUNG Engineer. He did not
agree to the problem in 'flyback transformer' as suggested by Sgopus
and nor did he solve the problem. He says that the TV when run purely as
TV has no HUM and the problem comes only when the TV is used as monitor
when connected to PC. So he says that it is the problem with the PC.

Smlunatick suggested to disconnect the speakers of the LCD TV, I do not
know how to do it so could not use "stand-alone" speakers.

Shenan Stnley suggested to see when the sound cable is not connected to
the computer---- the HUM goes considerably but still a little hissing
sound is heard --- I do not know whether that little hissing sound
should be there or not. Shenan Stnley seems right that the hum may be
coming the sound card.

Woody suggested reducing the sliders one at a time ---it did nothing.
And besides TV plug has three pin top.

Ed Covney suggested "grounding" wire between the PC and power
supply-----It also did nothing in eliminating HUM.

I am highly thankful to all in using their valuable time on this
subject. Thanks again.
dkb
 
Ed said:
Run a "grounding" wire between the PC's power supply
(use a screw as a metal post) and any metal part on the
back of the TV.

Ed
Click to expand...

You have a metal part (other than the usual connector jacks) on the back
of your TV (or computer monitor)? How OLD is that?! Everything I've seen
that was made in the last quarter century is thoroughly enclosed in the
plastic cabinet.
 
OldDuke said:
Why ask HERE? This is clearly a non-windows pure hardware problem and
as such does NOT belong here.

Ask elsewhere
Click to expand...

Ignore our resident ****wit. He has been told time and time again that
hardware questions are perfectly acceptable in this *hardware* newsgroup.
He alone (and he is alone in this) has decided that he decides what can and
can't be posted here. It makes no difference, everone takes no notice.
 
dkb said:
I have Samsung 26" monitor cum TV and I get a continuous Humming sound
from its speakers (and it was not there previously). When I minimize the
window the sound gets reduced. Tried to lower the volume nothing
happens. Even tried to keep 'No Sounds' in the sound scheme in the
sounds and audio devices properties---but failed. I want silence. Could
it be achieved? Please guide.
dkb
Click to expand...

The HUM got vanished with the help of yet another SAMSUNG Engineer who
came to see the problem today evening. He said that the TV is stereo and
the audio cable provided by SAMSUNG is also stereo, while as the sound
hole in the back of the PC is mono. He replaced the stereo cable with
his mono cable and the HUM vanished. With the help of all of you I was
in a position to tell the engineer that removing the audio-cable
provided by SAMSUNG removes the HUM and that might have given the
Engineer an idea to change the cable.

Replying RobertVA the TV is new one and less than three months old and
everything is enclosed in a plastic cabinet. However there are four peg
type metal 2" length pieces in the back of the cabinet that are used for
wall hanging of the PC and it is that metal peg that I did grounding of
the power supply of the PC and the computer. Whether I was right in
doing the grounding or not I do not know. Anyways.
Thanks again for all the suggestions.
dkb
 
The HUM got vanished with the help of yet another SAMSUNG Engineer who
came to see the problem today evening. He said that the TV is stereo and
the audio cable provided by SAMSUNG is also stereo, while as the sound
hole in the back of the PC is mono. He replaced the stereo cable with
his mono cable and the HUM vanished. With the help of all of you I was
in a position to tell the engineer that removing the audio-cable
provided by SAMSUNG removes the HUM and that might have given the
Engineer an idea to change the cable.

Replying RobertVA the TV is new one and less than three months old and
everything is enclosed in a plastic cabinet. However there are four peg
type metal 2" length pieces in the back of the cabinet that are used for
wall hanging of the PC and it is that metal peg that I did grounding of
the power supply of the PC and the computer. Whether I was right in
doing the grounding or not I do not know. Anyways.
Thanks again for all the suggestions.
dkb
Click to expand...

I do not think to is true. Most sound cards are supposed to be
stereo, but some cards may need to have the stereo mode turned on.
 
smlunatick said:
I do not think to is true. Most sound cards are supposed to be
stereo, but some cards may need to have the stereo mode turned on.
Click to expand...

Just for my knowledge ----how could I make the stereo mode turned on
please? I may need it later on when the TV audio cable signal ( at
present mono) gets changed to stereo. Please guide.
 
Just for my knowledge ----how could I make the stereo mode turned on
please? I may need it later on when the TV audio cable signal ( at
present mono) gets changed to stereo. Please guide.- Hide quoted text -

- Show quoted text -
Click to expand...

Not sure about all sound cards, but several Sound Blaster did have a
'stereo" setting.

Check you drivers.
 
dkb said:
The HUM got vanished with the help of yet another SAMSUNG Engineer who
came to see the problem today evening. He said that the TV is stereo and
the audio cable provided by SAMSUNG is also stereo, while as the sound
hole in the back of the PC is mono. He replaced the stereo cable with his
mono cable and the HUM vanished. With the help of all of you I was in a
position to tell the engineer that removing the audio-cable provided by
SAMSUNG removes the HUM and that might have given the Engineer an idea to
change the cable.

Replying RobertVA the TV is new one and less than three months old and
everything is enclosed in a plastic cabinet. However there are four peg
type metal 2" length pieces in the back of the cabinet that are used for
wall hanging of the PC and it is that metal peg that I did grounding of
the power supply of the PC and the computer. Whether I was right in doing
the grounding or not I do not know. Anyways.
Thanks again for all the suggestions.
Click to expand...

I sounds like you had what is known as an "earth loop". These can be rather
subtle or plain obvious, but they can cause unwanted hum. In your case, I
would suggest that the pair of screens connected together at both ends of
the cable caused your hum. Some earth loops can be serious enough to
actually destroy equipment, though this is, fortunately, not a common
occurence. It usually requires one item in the chain to have an internal
oscillator.
 
Back
Top