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PostPosted: Mon Feb 19, 2018 10:58 am 
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Joined: Mon Oct 10, 2016 10:46 am
Posts: 12
Location: Geneva, IL, US
I hear a buzzing/humming noise coming from the right speaker. It’s constant. I’ve checked the speaker wires the see if their is any crossover between the positive and negative wires at the terminals, and there doesn’t appear to be any.

My next thing is to bring the receiver in to a repair shop but is there anything else I should do before that? Does anyone have any other suggestions that I could try?

Please reply.

Thanks,

Tim


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PostPosted: Mon Feb 19, 2018 5:11 pm 
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Joined: Wed Apr 28, 2010 2:00 pm
Posts: 607
Location: Rio Rancho, NM, US
With the receiver turned off swap your speaker cables at the speakers: connect the right channel cable to your left speaker and vice versa. Power-up the receiver and if the buzzing/humming problem moves to the left channel you have a problem with the right channel of your receiver. If the right channel speaker continues to hum & buzz the problem could be with that speaker. Make sure all of your connections are clean and tight.

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PostPosted: Sat Feb 24, 2018 8:55 am 
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Joined: Mon Oct 10, 2016 10:46 am
Posts: 12
Location: Geneva, IL, US
I did what you said and the humming stopped for a day or two but has returned to the right speaker and now I notice there is a hum in the subwoofer. Not looking good.... The odd thing is the receiver doesn’t have a speaker level output. It just has a line-level output for the subwoofer. Any clue on what is the matter is greatly appreciated.


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PostPosted: Sat Feb 24, 2018 1:35 pm 
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Joined: Thu Dec 28, 2017 6:40 pm
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Location: Lafayette, LA, US
Might be a ground loop.

Try disconnecting your cable tv wire.


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PostPosted: Mon Feb 26, 2018 1:12 pm 
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Joined: Thu Jan 28, 2016 4:46 am
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Location: Piscataway, NJ, US
Hi, Did you resolve this? If not, Is the hum constant no matter what input the Marantz is set at? Or only on DVD, or Phono, etc?


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PostPosted: Mon Feb 26, 2018 1:17 pm 
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Joined: Thu Jan 28, 2016 4:46 am
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Location: Piscataway, NJ, US
PS: slightly twist the connection left/right a few times at the sub woofer and where the sub woofer connects to the receiver and see if the sub woofer hum stops or changes is some way.


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