Question about Sony STR-DE975 Receiver

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Sound lost At time of turning on receiver (TV and other inputs) sound is on.. After about 5 minutes sound off. Sometimes for at least 5-10 minutes. Then restored. About 15 minutes later goes off again. For about 5 minutes. Frequency of lapse of sound increasing. Hear a "click" when sound is lost. Some of the times I can restore sound by changing sound field. Is there any solution. What should I be looking for....dbrahinsky@pacificnet.net.

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  • slillestrand Sep 13, 2008

    I am having the same problem with the exact same model receiver. I hear the click as well and I can quick fix it by moving the TV input chords. I think there is a short some where, but obviousely this is a fixable issue.



    I need help as well on how to fix this.



    Thanks

    Scott

  • Anonymous Sep 17, 2008

    Had the same problem until a puff of smoke took the sound away permanently.

  • jmasters Dec 28, 2008

    I have the same problem with the same model. The clicking is coming from one of three relays on the main board inside the unit. I've "fixed" mine by smacking the side of the unit, which usually gets the relay to click back on. It doesn't always stay on. I don't know if it's worth it to replace those relays, or what. If you have the cover off of the unit, you can tap lightly on the relays (they are blue, and they're all together) and usually you'll hear and feel it click back on.

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I don't know if this will solve your problem, but I have a question.  Does the receiver sit under another piece of hardware?  Especially one that gives off a lot of heat?  It is possible that the amp or power supply is overheating.  The heat forces the receiver off until it has a chance to cool down.  Then when it turns back on, it starts to generate heat again.  Try moving it out from under any other gear or out from under a shelf so that lots of air can get in the top.  Maybe even try putting a fan over it, just as a test to see if this helps.  I work at a recording studio in Toronto, and we were having the same problem with one of our digital multitrack tape machines (No the studio is not trapped 10 years in the past - we just use tape for backing up and client delivery).  Anyway, early in the day, the unit worked fine.  If we tried to use it later in the day, we would get glitches all over the tape, or the transport would freeze up altogether.  We found that when we moved the unit into a rack where it could really breath, and where it wasn't right under an 8 channel mic pre-amp, that it worked without any problem.  I hope this helps.  Good Luck!

Posted on Sep 18, 2008

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