Question about Nakamichi AV-10 Receiver

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Light buzz sound in channels - Nakamichi AV-10 Receiver

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  • sonic boom electronics
    sonic boom electronics Jul 03, 2010

    some high power amps always have slight buzz in background was it always doing this

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I'd suspect airborne electromagnetic interference entering the system through an insufficiently shielded cable; or cable(s) routed too close to power cords or magnetic fields; or a flaky track lighing fader control.

Posted on Jul 04, 2010

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Hi, I am Ashish from India. I would like to know that did you solved your receiver's problem or not? If not than would you like to sale it as it? If yes than can you send me few original images of your Receiver/Amplifier?
Thanks Ashish

Posted on Aug 08, 2010

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Sansui aux-410r amp crackling when switched on followed by high pitched sound and other sound like vinyl played at high volume and stylus being dragged across it .can anyone help please.


This is some kind of componant fault. To find out where determine if the sound is in one channel or both. If in both it could be in the power supply or in something that has both channels common to it. If in just one channel than at least you have the good channel to work with. You can test the bad channel by poking it with an insulated tool. It should make buzzing noises. If it makes buzzing noises in the good channel and is differerent in the bad in anyway you have found something. If the sound also comes and go suspect bad soldering.

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Buzzing nois of this kind can come from a short or from disturbance.

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Annoying sound


Hi Anita

Determine source of Buzz
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Left or Right channel
Can you hear buzz in earphones
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1 Answer

Sound from only one channel


Turn off the other channel and listen only to the bad channel playing some music. Turn it up! If you hear any music the pre-amp is working and the power amp is faulty. If you don't, then the pre-amp is faulty.
Because it's a stereo amp you have the good channel to compare with the bad. So you can do voltage tests, or "buzz" tests. Buzz Tests or where you apply a insulated tool to the circuits, a buzz will be heard. If it buzzers in the good channel it should in the bad. Ignore the power supply and don't short any parts out!

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1 Answer

Buzzing at low volumes in front channels


sorry nawrock, i cannot help u with this. need to look at what is common on both front channels on a schematic. good luck.

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My magnavox tv is making a buzzing sound, no picture, and wont change channels (just a dark screen)


Something has shorted in the set causing the power supply to make that buzzing sound. Most likely the short is in the horizontal circuit. The horizontal makes the high voltage work which in turn lights the picture tube.

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1 Answer

My amp has lost sound in one channel.I need a circuit diagram.


No you don't really. The good channel will tell you everything about the bad channel as it should be the same. For instance you can measure voltages and compare them and if you prod the good channel and get a loud buzz at various stages. Then you should also get the same results with the bad one. Work backwords from the speaker terminals. Buzz on good Buzz on bad section is working. Buzz on good nothing on bad. Faulty stage. It's not likely to be the power supply as that would affect the other channel.

Apr 04, 2009 | Audio Players & Recorders

1 Answer

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Hi...

Try another GOOD speaker on your centre channel.
If the buzz ....buzzes off, it's a bad speaker.
If not , It's in the power amp section on the unit.

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