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Buzzing in KLH R7000

I have a shipping damaged KLH R7000 receiver that has a 60 hertz buzz in the speakers. The buzz does is always present and varies only slightly with the volume level. Everything works on the system. The repair shop said the trouble is related to a bad voltage requlator, which blows a capacitor that is supposed to filter out the buzz. They say that the voltage requlator would only be available from the manufacturer, and therefore would be very expensive. I don't work directly in the electronics field, but it seems to me that a voltage regulator would be a somewhat generic component that should be available from a number of sources.

Posted by Jeff Hess on

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Look on the component for details or in the schematic of the device if u can find a voltage requlator that matches the same specifications as in ur system then u will b happy till then u will need the manufacturer requlator good luck windman

Posted on Feb 13, 2006

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Buzzing sound coming out of back speakers

Make/model of receiver or amplifier?

Type of speakers -

The buzzing is a 60 hertz ground loop - most likely.

Make sure all connections are properly grounded and that all connections are firmly in place. Assure that wires are connected correctly. If necessary, trace each wire to assure proper connection.

Older phonographs have ground connections. Most receivers have a ground lug nut connection.


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Like I wrote, I had a similar problem with popping and then no audio for an extended period of time. I found the solution on another site, http://dexsoft.com/blog/?p=15

Apparently the solder joints are weak, and just as the blog described when I opened up the receiver I saw the same scorch marks from overheating. Just as the blog described, I added solder to each of the joints in the photo and have had no problem ever since.

I am no solder expert, this is my 2nd time, but all I did is build up each of the joints and I have been listening to music, playing movies in surround sound with no problems, no popping for the last 2 weeks.
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go to this site dexsoft.com/blog. Is under : KLH R7000 no audio repair. Problem solve
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