Hello there folks,

I am trying to sort out a buzzing problem I have when connecting my laptop
to my hifi.

If I plug the laptop into Mains (AC power), then into my HiFi which is also
plugged into Mains, there is a buzz problem.

If I plug the laptop into Mains but listen on headphones (using the same
minijack output socket), there is no problem

If I use battery power on the laptop and connect it to my HiFi, there is no
problem...

SO there is only a problem when BOTH laptop AND HiFi are connected to the
Mains.

Anyone have any ideas what to do to fix it, or where the problem comes from?

Your input would me MASSIVELY appreciated!

Thanks,
Mark.

Mark,

You need an audio isolation transformer - two actually, for stereo. The
Ebtech Hum Eliminator is decent and cheap (about $60 for stereo), but the
ones Jensen Transformers makes are even better though more expensive (about
$80-100 each and you need two).

--Ethan

Mark,

You need an audio isolation transformer - two actually, for stereo. The
Ebtech Hum Eliminator is decent and cheap (about $60 for stereo), but the
ones Jensen Transformers makes are even better though more expensive (about
$80-100 each and you need two).

--Ethan

Depending on your hifi system, the answer may be as simple as reversing the hifi
plugs in the AC mains. Unless your hifi system is all three prong plugs, it is a
good idea to disconnect all components from each other and the mains. Plug each
component into the mains one at a time and as you do that, measure the AC
voltage between the component chassis and earth ground. When you are sure that
all the hifi equipment is plugged in with each chassis properly grounded, then
connect them up and try the computer once more.

mark palmos wrote:

Hello there folks,

I am trying to sort out a buzzing problem I have when connecting my laptop
to my hifi.

If I plug the laptop into Mains (AC power), then into my HiFi which is also
plugged into Mains, there is a buzz problem.

If I plug the laptop into Mains but listen on headphones (using the same
minijack output socket), there is no problem

If I use battery power on the laptop and connect it to my HiFi, there is no
problem...

SO there is only a problem when BOTH laptop AND HiFi are connected to the
Mains.

Anyone have any ideas what to do to fix it, or where the problem comes from?

Your input would me MASSIVELY appreciated!

Thanks,
Mark.

Thanks a lot for the ideas guys, Im not much of a techie myself, but since I
have about 12 plugs in the corner where the HiFi is, It would be great to
find ONE item that is messing it up and just fix that! Most plugs are 3
prong, so that might not work, but i will check it out!

Thanks again,
Mark.

"Robert Gault" wrote in message
...
Depending on your hifi system, the answer may be as simple as reversing
the hifi
plugs in the AC mains. Unless your hifi system is all three prong plugs,
it is a
good idea to disconnect all components from each other and the mains. Plug
each
component into the mains one at a time and as you do that, measure the AC
voltage between the component chassis and earth ground. When you are sure
that
all the hifi equipment is plugged in with each chassis properly grounded,
then
connect them up and try the computer once more.

Thanks a lot for the ideas guys, Im not much of a techie myself, but since I
have about 12 plugs in the corner where the HiFi is, It would be great to
find ONE item that is messing it up and just fix that! Most plugs are 3
prong, so that might not work, but i will check it out!

Thanks again,
Mark.

"Robert Gault" wrote in message
...
Depending on your hifi system, the answer may be as simple as reversing
the hifi
plugs in the AC mains. Unless your hifi system is all three prong plugs,
it is a
good idea to disconnect all components from each other and the mains. Plug
each
component into the mains one at a time and as you do that, measure the AC
voltage between the component chassis and earth ground. When you are sure
that
all the hifi equipment is plugged in with each chassis properly grounded,
then
connect them up and try the computer once more.

Depending on your hifi system, the answer may be as simple as reversing the hifi
plugs in the AC mains. Unless your hifi system is all three prong plugs, it is a
good idea to disconnect all components from each other and the mains. Plug each
component into the mains one at a time and as you do that, measure the AC
voltage between the component chassis and earth ground. When you are sure that
all the hifi equipment is plugged in with each chassis properly grounded, then
connect them up and try the computer once more.

mark palmos wrote:

Hello there folks,

I am trying to sort out a buzzing problem I have when connecting my laptop
to my hifi.

If I plug the laptop into Mains (AC power), then into my HiFi which is also
plugged into Mains, there is a buzz problem.

If I plug the laptop into Mains but listen on headphones (using the same
minijack output socket), there is no problem

If I use battery power on the laptop and connect it to my HiFi, there is no
problem...

SO there is only a problem when BOTH laptop AND HiFi are connected to the
Mains.

Anyone have any ideas what to do to fix it, or where the problem comes from?

Your input would me MASSIVELY appreciated!

Thanks,
Mark.

"mark palmos" writes:

Hello there folks,

I am trying to sort out a buzzing problem I have when connecting my laptop
to my hifi.

If I plug the laptop into Mains (AC power), then into my HiFi which is also
plugged into Mains, there is a buzz problem.

If I plug the laptop into Mains but listen on headphones (using the same
minijack output socket), there is no problem

If I use battery power on the laptop and connect it to my HiFi, there is no
problem...

SO there is only a problem when BOTH laptop AND HiFi are connected to the
Mains.

Anyone have any ideas what to do to fix it, or where the problem comes from?

Your input would me MASSIVELY appreciated!

Thanks,
Mark.

Read thsi document:
http://www.epanorama.net/documents/g...oop/index.html

--
Tomi Engdahl (http://www.iki.fi/then/)
Take a look at my electronics web links and documents at
http://www.epanorama.net/

What happens if you use an extension lead from another power supply for the
lap top and a seperate one for the Hi Fi ?
"Tomi Holger Engdahl" wrote in message
...
"mark palmos" writes:

Hello there folks,

I am trying to sort out a buzzing problem I have when connecting my
laptop
to my hifi.

If I plug the laptop into Mains (AC power), then into my HiFi which is
also
plugged into Mains, there is a buzz problem.

If I plug the laptop into Mains but listen on headphones (using the same
minijack output socket), there is no problem

If I use battery power on the laptop and connect it to my HiFi, there is
no
problem...

SO there is only a problem when BOTH laptop AND HiFi are connected to
the
Mains.

Anyone have any ideas what to do to fix it, or where the problem comes
from?

Your input would me MASSIVELY appreciated!

Thanks,
Mark.

Read thsi document:
http://www.epanorama.net/documents/g...oop/index.html

--
Tomi Engdahl (http://www.iki.fi/then/)
Take a look at my electronics web links and documents at
http://www.epanorama.net/

What happens if you use an extension lead from another power supply for the
lap top and a seperate one for the Hi Fi ?
"Tomi Holger Engdahl" wrote in message
...
"mark palmos" writes:

Hello there folks,

I am trying to sort out a buzzing problem I have when connecting my
laptop
to my hifi.

If I plug the laptop into Mains (AC power), then into my HiFi which is
also
plugged into Mains, there is a buzz problem.

If I plug the laptop into Mains but listen on headphones (using the same
minijack output socket), there is no problem

If I use battery power on the laptop and connect it to my HiFi, there is
no
problem...

SO there is only a problem when BOTH laptop AND HiFi are connected to
the
Mains.

Anyone have any ideas what to do to fix it, or where the problem comes
from?

Your input would me MASSIVELY appreciated!

Thanks,
Mark.

Read thsi document:
http://www.epanorama.net/documents/g...oop/index.html

--
Tomi Engdahl (http://www.iki.fi/then/)
Take a look at my electronics web links and documents at
http://www.epanorama.net/

"mark palmos" writes:

Hello there folks,

I am trying to sort out a buzzing problem I have when connecting my laptop
to my hifi.

If I plug the laptop into Mains (AC power), then into my HiFi which is also
plugged into Mains, there is a buzz problem.

If I plug the laptop into Mains but listen on headphones (using the same
minijack output socket), there is no problem

If I use battery power on the laptop and connect it to my HiFi, there is no
problem...

SO there is only a problem when BOTH laptop AND HiFi are connected to the
Mains.

Anyone have any ideas what to do to fix it, or where the problem comes from?

Your input would me MASSIVELY appreciated!

Thanks,
Mark.

Read thsi document:
http://www.epanorama.net/documents/g...oop/index.html

--
Tomi Engdahl (http://www.iki.fi/then/)
Take a look at my electronics web links and documents at
http://www.epanorama.net/