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Eazyelg42
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Joined: Dec 25 2005 - 3:45pm
TV creating noise through stereo

Hello,
I'm having an issue with my stereo. It seems that whenever I have the stereo and TV on at the same time, such as watching a movie, there is a very slight high-pitched ringing that comes through the speakers. You can't always hear it, but it's definitely there. If you turn the TV off, the noise goes away. My TV is also increasing the hum when I am listening to my turntable (along with producing the same ringing sound). When I turn the TV off, the hum goes back to its normal level (very low). Any ideas on how I can get rid of this noise?

Jan Vigne
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Re: TV creating noise through stereo

You can get a new TV. Hw old is the present set and what model is it? How close does it sit in relation to the turntable?

59mga
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Re: TV creating noise through stereo

Is it a flat screen or CRT television? If it's a flat screen it could be a power supply problem (bad filter caps, regulator or grounding problems).

If you have a CRT TV the noise could be caused by a faulty convergence coil or degaussing coil. An isolation transformer my help. A poorly grounded electrical system could also be adding to the noise.

mjalazard
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Re: TV creating noise through stereo

Is your TV a part of an audio-video stereo system or completely independent? If you use your TV or cable box to listen to television through the stereo you can install the following:
Jensen Isomaxx are great at removing the hum in AV systems.
Jensen and Mondail also make isolation/ground loop hum eliminating units that install in the TV coaxial cable line.
Old Colony Sound Labs carries the Jensen stuff or do a Google search.
You can go on the cheap and try a car-stereo noise eliminator unit on your RCA line between the TV output and your stereo as well.
If your TV sound is not hooked to your stereo, get some extension cords and plug the TV into an wall outlet with a different circut breaker (don't try the kitchen 'cause of the refrigerator motor or circuits with fluorescent bulbs).
If you have a small apartment and a nice neighbor, plug the extension cord into a suitble outlet there. If there is no noise with the TV plugged into another circuit, then the noise is coming from the TV though the power source. There are plenty of power conditioners out there...many costing more than your TV with lots of pros and cons about them. See if you can borrow one from an audiophile friend to find out if it works. I'de try plugging the TV in the power conditioner first to save time from plugging in your electronics.
Sorry about the lenght of this reply...I've had noise issues in the past...especially Buddha's new dogs!

Buddha
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Joined: Sep 8 2005 - 10:24am
Re: TV creating noise through stereo


Quote:
Is your TV a part of an audio-video stereo system or completely independent? If you use your TV or cable box to listen to television through the stereo you can install the following:
Jensen Isomaxx are great at removing the hum in AV systems.
Jensen and Mondail also make isolation/ground loop hum eliminating units that install in the TV coaxial cable line.
Old Colony Sound Labs carries the Jensen stuff or do a Google search.
You can go on the cheap and try a car-stereo noise eliminator unit on your RCA line between the TV output and your stereo as well.
If your TV sound is not hooked to your stereo, get some extension cords and plug the TV into an wall outlet with a different circut breaker (don't try the kitchen 'cause of the refrigerator motor or circuits with fluorescent bulbs).
If you have a small apartment and a nice neighbor, plug the extension cord into a suitble outlet there. If there is no noise with the TV plugged into another circuit, then the noise is coming from the TV though the power source. There are plenty of power conditioners out there...many costing more than your TV with lots of pros and cons about them. See if you can borrow one from an audiophile friend to find out if it works. I'de try plugging the TV in the power conditioner first to save time from plugging in your electronics.
Sorry about the lenght of this reply...I've had noise issues in the past...especially Buddha's new dogs!

NFS is dead right.

That was the perfect answer.

Shhhh...he still has noise issues, but now it's his preamp and "tube rush" instead of the TV. Most of his TV noise issues were solved once he tried turning down the volume on the TV while he was playing his Mobile Fidelity Sound Labs 8-tracks.

I'm amazed he can hear my dogs bark. They only bark at about 85 dB.

Yuk yuk yuk...

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