Question about B&K AVR-202

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Amp buzzing i have a B&K AVR 202 amp,and it started buzzing thru my speakers as soon as i power up the amp,can you tell me what the problem is

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  • jeffreylwong Nov 14, 2008

    I have the same issue. There is a low level, persistent buzz. It gets covered up by music, but I'm sure the buzzing is going on in the background.




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3 Suggested Answers

hawkwatcher
  • 67 Answers

SOURCE: Buzz or hum

My guess would be +and -12v supply to preamp opamps has ripple. (drycaps or bad solder). I may be able to get you a pdf service manual if needed. kstahl65@att.net

Posted on Jan 31, 2008

petraman7
  • 1175 Answers

SOURCE: I have a buzz / static that appears for the first 15 minutes.

Hi...

I just opened up an AVR3300..It's trouble is that it goes into stndby
at once.
The BIG power supply caps are VERY swelled at the top.

That would be my informed view on why it's bad.

I suggest you look at that being your possible trouble too.

Scott in Vermont

Posted on Jul 09, 2009

dunnbiker
  • 8546 Answers

SOURCE: I get no sound out of right front speaker.

Possibly. Try swapping the other speaker to that channel to decide.

Posted on Dec 09, 2010

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2 Answers

My B&K AVR 202 will not come out of standby.


hi,

Check the speakers first. Remove all the speakers from the amplifier and switch ON the amplifier. If the amplifier switch ON from standby without any trouble then any one of the speaker is damged or the wiring to the speaker have some problem. . if it doesn't switch ON from standby there is internal hardware faulty.
IF so Please take it any good electronic reparing shope near you. Becuase you hve to check the voltages at all the outputs of the amplifiers. In this amplifier user can't do any thing. To work wit this amplifer need a throuh knowledge in electronics. If you do someting wrong the amp will became irreparable, because its amplifier stage work in high ampere power supply.
OK

Sep 19, 2011 | B&K AVR-202

1 Answer

Can I connect 4 ohms speakers on the AVR 230? Thanks


Hello
Output impedence of 95% of Herman Kardon sets are desighed for 6 Ohms speaker. There is an output speaker sensor circutary it it which sense the impedence of the connected speaker. it is a built in feedback circuit and is ment for protection for both speakers and power amplifier section of the amp. If you connect a 4 Ohms speaker, the set will sense it and there is a chance to get it tripped as you increase the volume. Just connect and check. Advance the volume of the set very gently. If tripping occurs or it just cut off as soon as switch ON, never connect it again. OK.

Jul 27, 2011 | Harman Kardon AVR 230 Receiver

1 Answer

There is buzzing/feedback on every Chanel. i have disconnected all wires trying just one speaker at a time. headphones channel volume turned all the way down. speakers with different ohms (6,8,10) every...


Food for thought: I had a buzzing that affected only one analog source and it was associated with my track lighting being on. They told me the fader was defective so I replaced it. It was still there but it has since gone dormant and I don't know why. Just the same, I avoid using the track lighting if I'm listening to anything.

Jun 11, 2010 | Denon AVR-3802 Receiver

1 Answer

Making a loud buzzing noise coming from the receiver AVR307 not through the speakers??


 Either some shielding baffles are loose and are vibrating or the transformer itself is generating too much sound . This happens when the power extracted thru it exceeds its capacity - there's a fault/short somewhere in the electronics. You will gonna have to open it and check for the fault.

May 29, 2010 | B&K AVR-307 Receiver

1 Answer

I have a buzz / static that appears for the first 15 minutes.


Hi...

I just opened up an AVR3300..It's trouble is that it goes into stndby
at once.
The BIG power supply caps are VERY swelled at the top.

That would be my informed view on why it's bad.

I suggest you look at that being your possible trouble too.

Scott in Vermont

Jun 22, 2009 | Denon AVR-3300 Receiver

2 Answers

Humming sound (speakers)when HK AVR is powered up.


In my case the buzz was only on front speakers. There are 3 capasitors (100uF/25V) very close to the cooling ribs of 3 regulators in the power supply. In my case the C922 was bad.

Apr 02, 2009 | Harman Kardon AVR 500 Receiver

1 Answer

My Fender Bassman 100 amp keeps buzzing.


Part of the power supply is a filtering stage that completes the conversion from AC current to DC. The "cap" is a capacitor that furnishes voltage to help smooth the alternating current that is left from the rectifier stage. These will start to fail over time. While it is a relatively simple repair for anyone that does this for a living, I would not suggest this as your first repair. Expect a parts cost inthe $20 range plus the local labor rate for the entire repair.

Dan

Dec 04, 2008 | B&K AVR-202

3 Answers

Buzz or hum


My guess would be +and -12v supply to preamp opamps has ripple. (drycaps or bad solder). I may be able to get you a pdf service manual if needed. kstahl65@att.net

Jan 27, 2008 | Denon AVR-3300 Receiver

1 Answer

Buzzing sound thru speaker even with volume down to zero


maybe some filter capacitors of the amplifier has been drying out! check for the main filter capacitors and output capacitors of your amplifier. replace them if necessary with a higher capacitance but the same voltage rating!

Nov 16, 2007 | Onkyo TX-DS696 Receiver

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