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.
An expert who has achieved level 2 by getting 100 points
An expert that got 5 achievements.
An expert who has answered 200 questions.
An expert whose answer got voted for 20 times.
Re: Buzzing in KLH R7000
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
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
First thing to check is theat there is no shorts in your speaker cabling either damaged cabling or ends toching together at the amp or speaker connections. If there is notheing tounching, try unplugginging ALL of the speaker wires then start it up again, if it doesn't click off then carefully check all of your speaker connections. try plugging them in one at a time while turning it on and seeing if it clicks off.
If it isn't a problem you might have a problem in the power supply or amplifier modules of your reciever - That problem would be one for the pros! Hope this helps! Good Luck!
Take the top cover off with the unit unplugged, you will see the fuse just beside the big capacitors, diodes and the power transformer(and fuse current rating is written on the board) . The problem with your receiver is worse than a fuse I suspect. So, before replacing the fuse check for short circuit. If there is a short circuit specially power amp section(which is common to fail) the problem might get worse when you rplace the fuse without checking it. :)
When I watch movies, most of the talking is directed to the center speaker. During surround sound, this gives a more realistic environment, with voices coming from the source (center where your tv is) and ambeint noise coming from the left/right corners.
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.
The speakers have buzzing sound because of damaged cones.
Over driving speakers, especially with heavy low frequencies, can tear the voice coil away from the cone.
Once damaged, only replacement will help