Question about Sony STR-DE310
I have a Sony FM/AM Receiver (Model # STR-DE310, S#8137032) that I purchased in 1998. It has been workingfine until a few weeks ago, when it shut down anddisplayed a flashing “PROTECT” message. The manual advises to “turn the receiver off,eliminate the short-circuit problem, and turn on thepower again.” It does not offer what specificshort-circuit problems may exist. I have checked allthe wires leading out and into other components andspeakers, but I find no obvious culprit – loose orcrossing wires etc. There have been absolutely no changes or modificationsor movements at all with my entire stereo system sinceI first installed it many years ago. This juststarting occurring right out of the blue. It is also interesting to note, that except for oneother time when it did this twice, the flashing“PROTECT” message never again is displayed after Iturn the power back on again. It will continue to workjust fine for several hours of use after turning onthe unit again. I would think that if indeed theretruly were a short in a circuit somewhere, it wouldshut down immediately with each attempt to turn thepower back on. Could there be a faulty internal breaker in thereceiver itself that would set this off? It has onlydone this within the first 5-10 minutes of use. AfterI turn the power off and turn it back on, it seems towork just fine for up to several hours or more, so itwould not seem to me to be a heat buildup problem either. Can you offer any suggestions?
I had a similar problem with my unit. I found no evidence of a short circuit and after removing the cover no evidence of burns or overheating . I turned the unit on and off repeatedly and eventuaully it started. As I was moving the unit back on its shelf I brushed my ring hand across the top of the unit and the "protect" warning started to flash. It occurred to me there might be a static electricity issue. I hooked up a ground wire as per the manual. Problem solved----at least for the past few weeks. The system has work flawlessly every time I turn it on.
Posted on Oct 29, 2008
Did you ever find a solution for this problem? because I am having the same issue with my STR-SE391. if so let me know what to do.
Posted on Feb 01, 2008
How do you hook up a groundwire to this receiver?
Posted on Jan 21, 2010
Yes, I am aware that increasing volume could cause such a problem. However, I listen exclusively to classical/choral music and have never been someone who "cranks it up". It has never occurred when I had the volume up any higher than I normally do (usually at about 3-4 out of total 12 settings on the volume control.
To gilmorespub: Lately, my problem has resolved by itself, or at least I have not had the problem occur in the last several uses. I did "jiggle" the wires again on the speaker manifold, and although I never saw any obvious problem with wires touching etc. perhaps it was enough to alleviate the problem. Or it just resolved itself. I still am suspecting an internal breaker fault that is either wearing out or is unstable.
Posted on Feb 01, 2008
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Posted on Jan 02, 2017
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