Question about Sony STR-DE985 Receiver

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

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  • Anonymous Mar 13, 2014

    First FM, then am as well. This was preceded by a very odd noise. Everything else works just fine. Thank you.

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  • Expert
  • 256 Answers

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

Posted on Dec 06, 2012

5 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 52 Answers

SOURCE: I HAVE A SONY RECIEVER STR-DH700, I get no sound

make sure the FM antenna is connected and in a good place then check to see if the A-B speaker selector is selected properly.check to see that the sound field is set properly, My 800 allows for several different options and if your speaker wires are reversed or not in the correct position front left at front left etc it will not send the signal to those speakers. try using the TEST TONE feature if you have one it will send a signal to each speaker in sequence (LF< C< RF<in order) it will go all the way around to see if they are connected properly, that way you can tell if they are connected at all or in the wrong spot on the back interface. I dont know if that is what you meant by AUTO CAL, but that is a seperate feature when you use the connected mic to determine range, height and distance to the position in the room you are most likely to be seated for optimal sound.

Posted on Nov 29, 2009

dunnbiker
  • 8546 Answers

SOURCE: Subwoofer hum from STR-DH800

That points pretty much to a bad shield on the cable. Have you tried another one? Another thing to try is to rotate the AC power cord on the sub (if it has one). Sorry, too lazy to look it up.

Posted on Dec 29, 2009

freetek
  • 5568 Answers

SOURCE: My Sony STR-DE685 Receiver out of the blue now has

In receivers, there are different power supplies or power supply outputs for the receiver and amplifier sections so you can have separate failures with one area not affecting the other. From your description, I think the (probably lower voltage) section for the receiver has either lost a cheap filter capacitor or a regulator IC. Neither of these are expensive parts but I can't know what labor costs in your area might be. An honest tech shouldn't ask more than ~$100 US for that kind of repair.

Posted on Apr 16, 2011

dunnbiker
  • 8546 Answers

SOURCE: i purchased a used sony

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Sony-STR-DE985-Receivers-manual/id/387dj984/t/2/

Posted on Jun 12, 2011

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1 Answer

Manually tuning the reciever


you should be able to tune in manually.
press tune
press fm or am
press d. tuning
enter the frequency of the station 4 or 5 digits ie 9370 or 10450

another thing to look into would be getting a yagi fm antenna, they are directional and although you may have to rotate it for best results, they work great.

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