Question about Sony STR-DE685 Receiver

2 Answers

I have a hum or buzz on AM and FM bands only.

All other inputs are fine, with no buzz or hum. Any ideas?

Posted by on

  • Ed Misanko
    Ed Misanko Mar 25, 2009

    same problem for me also no color with s-video cord output to TV

  • Scott Frye
    Scott Frye May 11, 2010

    Electrical interference from somewhere outside the box.
    Is it next to a motor or transformer or fan?


×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 5 Answers

I had the same problem, but it is not the tuner module! An exchange of capacitor C899(100μF/35V) on the standby board has resolved the problem. Under a dollar from an electrical store and you are all sorted. 10 minute fix for those with a soldering iron.

Posted on Apr 05, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Thanks

Posted on Apr 05, 2009

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My Denon Stereo Receiver (DRA-345R) (quite an old model but has worked perfectly up until now) has a very static reception on AM. FM is fine. It started when I had my DirecTV upgraded with a Genie (whole...


it's obviously getting interferance fronm that whole house broadcast unit (not abnormal!) best and only thing you can do is to move the stereo to a place where you can get the MOST am stations the loop ant. is exactly what it says it is a loop of wire with two ends..both ends connect to the ant. input on the back of the unit..however if that whole house broadcast unit is the devil then an ant. no matter what or how it's made will only recieve more static not built to reject static! so you've got to move it unfortunately ..fm is a totally different band obviously fm isn't being affected by that whole home broadcast unit..you're lucky! on that count

Dec 12, 2013 | Denon AVR-2307 Receiver

1 Answer

Str-de985 humming noise only when using FM tuner. Everything else works fine with no humming noise


Have you got a FM Antena hook up to it for the FM ,Sations, If not that could be causeing it to hum.

Dec 06, 2012 | Sony STR-DE985 Receiver

1 Answer

Nad 7140 fm low frequency hum


This is probably a 60 cycle hum and the problem is more likely confined to the am/fm board, there is a bad ground due to poor solder joints, broken ground wire, an open capacitor, this may not be easy to find, but it is a start.

Apr 22, 2012 | NAD 7140 Stereo Receiver With Phono Input

1 Answer

FM antenna is not providing reception, despite cable connected to powered antenna amplifier. TV also connected to powered antenna amplifier (splitter) works fine. FM mode produces only static. I purchased...


If I understand your setup, you've connected the receiver antenna terminal to the output of the antenna amplifier. If this is true, I'd suggest trying the receiver using a plain old FM dipole antenna (available at Radio Shack and other stores) or even just a piece of wire hooked to the antenna terminal. You should be able to pick up some local FM stations then.

What might be happening is that the FM is being filtered out by the amplifier. Some amps made mainly as a TV signal booster have an FM trap designed to block the FM broadcast band. In the analog broadcast days, the FM band was right near the sound part of a TV signal, and the trap was there to prevent interference. It may be filtering out your FM band.It may also be possible that you're just overloading the FM antenna input with the amplified signal. Sometimes a signal can be too strong. Using a simple wire antenna will let you test the receiver by itself.

Other than connecting an antenna you shouldn't have to do any setup for FM reception. If you still get no stations at all when using a simple antenna, then the receiver may need service. But I doubt Circuit City would have sold a floor model that was defective, even at the very end, unless it was clearly marked as such and sold "as-is". I'm pretty sure you'll find that the receiver works with an antenna made for FM.

Sep 14, 2011 | Denon DRA-37

2 Answers

I have a Boston Acoustics VR-500 Subwoofer with a problem. As soon as anything is plugged into the line level RCA jacks, the subwoofer produces a loud buzz/hum. I have tried connecting it to the subwoofer...


I'm thinking you have an open shield ground on the RCA input side. Connecting speaker inputs possibly restores the ground. Try connecting the high level inputs then disconnect the remote end of the cables (floating the grounds).

Then get out an ohmmeter and find that open circuitor or bad solder joint between RCA ground and real ground in the speaker's amplifier. Or.... if speaker ground kills the hum and you want to use RCA Line Level input to the sub, just connect one minus speaker output on your source amp to one minus on the sub's amp.

Mar 01, 2011 | Audio & Video Receivers

2 Answers

NAD T743: The digital channels stop working after a short time.


Hmm, sounds similar to my problem. Analog input and FM seems to work but all coax/opto input are dead ( for me there isn't a buzz).
Have you, fredrik648, solved your problem?
Anyone with ideas what to do?

Thanks
///Johan Westerlund.

May 11, 2009 | NAD T743 Receiver

1 Answer

A couple of weeks after initial setup of my brand new Onkyo XT-SR606 receiver, I noticed a loud buzzing noise that starts up approximately 10 min after the receiver is turned on. The buzzing is definitely...


The "buzz" you hear is a power hum made by the power supply transformer. It's technically called "Lamination hum" caused by the revering of electrical current through the power supply transformer. In some cases the hum can vibrate the chassis causing other loose material to vibrate. If you can, go to your dealer and check to see if other units of this same type typically make a hum this loud, and if not, see if he can solve the problem for you.

Feb 27, 2009 | Onkyo TX-SR606 Receiver

1 Answer

Humming sound on cable setting


have you tried to input another audio source into the audio inputs on the reciever that the cable box outputs are going into on the reciever ?
you may also need to ground the recievers frame and cable box frame to earth ground.
you also may have a bad connection in the wires or jacks for the audio connections
or the cable box audio out circuit needs repair

Feb 04, 2009 | Onkyo TX-SR606 Receiver

2 Answers

Can't Get A Radio Signal When I Connect A Cox Cable


Hi...
Some cable companies dont put the FM band on cable and some others put an FM trap (which kills the FM band) in line with the cable.
One of those is your problem.
You'll need to buy a FM antenna

Jul 25, 2008 | Sony STR-DE597 Receiver

Not finding what you are looking for?
Sony STR-DE685 Receiver Logo

Related Topics:

354 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Audio & Video Receivers Experts

nexrad_chris

Level 2 Expert

117 Answers

Cindy Wells

Level 3 Expert

4757 Answers

Pieter Vleeshouwers

Level 3 Expert

1413 Answers

Are you a Sony Audio and Video Receiver Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...