buzzing in my stereo

[Denondevastated]

I turn on my Denon AVR-3802 receiver, and there is a constant buzzing in the speakers. I don't need to have a source selected either, it just hums all the time(through speakers). Unaffected by volume or any other button/control on the unit. Is my awesome receiver just junk now or is it worth fixing?

 

[musical marv]

I turn on my Denon AVR-3802 receiver, and there is a constant buzzing in the speakers. I don't need to have a source selected either, it just hums all the time(through speakers). Unaffected by volume or any other button/control on the unit. Is my awesome receiver just junk now or is it worth fixing?

The cross over could be going in your speakers.

 

[makkem]

Hi
Has this just happened or has it been a problem since you got the denon?
Is the noise through both speakers or just one?
Has the noise started since you plugged something new into your Denon?
Has the noise started after you have moved the Denon or plugged it into a different wall outlet.
Is the noise a low hum(50-60 Hz) or a higher frequency.

 

[americanaudiophile]

It is very common to get a constant buzz when your receiver is connected to a cable box. Disconnect the input to the cable box while the system is on and the buzz may go away. You would then need something like this
http/www.amazon.com/Viewsonics-VSIS-EU-Cable-Ground-Isolator/dp/B0017I3K9M
This can happen because of a ground issue in the cable system outside of you home so it can just start on its own.
If the sound is a hum then you may have a ground loop due to the ac wiring. Disconnect all the inputs from the receiver and listen for the hum. If its gone connect each input one at a time and listen again. If your receiver or the source has a three wire plug you can use a 3-2 adapter to lift the ground. If none of your equipment has 3 wire ac plugs then you can try grounding the source to the receiver chassis with a length of wire. You would need a unpainted area to make the contact work.

 

[Denondevastated]

Thanks for the replies guys. The humming is constant, audible only through speakers (both/either). There isn't anything connected at all other than speakers. I have tried two different sets of speakers, just due to where the receiver was in my house and got the same result. No amount of adjustment anywhere on the unit changes the volume of the hum.
I have found one locally if I want it for 150.00 , sounds like it would be cheaper to just buy the used unit.

 

[musical marv]

Thanks for the replies guys. The humming is constant, audible only through speakers (both/either). There isn't anything connected at all other than speakers. I have tried two different sets of speakers, just due to where the receiver was in my house and got the same result. No amount of adjustment anywhere on the unit changes the volume of the hum.
I have found one locally if I want it for 150.00 , sounds like it would be cheaper to just buy the used unit.

Go for it.