Question about Sony ST-SA50ES 2 Channels Tuner

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Sony "Protect" message

My Sony receiver/tuner worked yesterday. Today, when I put a cd in, it plays for a second or two and then stops and a "Protect" message come up. Any clues?

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  • djhanseninsf Aug 17, 2008

    When playing a dvd, if sound ges too loud I get the same "protect" message and it shuts down the sound



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Posted on Jan 02, 2017


SOURCE: "Protect" flashing on STR-D665 Receiver

Check if you connect corectly the speakers wiresnand if they are right connected the audio amplifier Ic are damaged

Posted on Nov 28, 2008

  • 1 Answer

SOURCE: Getting a "Protect" message in the display which then shuts down

The speaker wires were al little frayed, so I cut and stripped new 3/8" leads and when re-inserted the receiver worked fine. The problem was a short from the frayed wires touching either the back of the receiver or some other metal near the terminal.

Posted on Dec 08, 2008

  • 4234 Answers

SOURCE: Receiver keeps flashing "PROTECT"

The protect message indicates that a problem was detected in the last stage of the amplifier and that it has shutdown to prevent further damage. Usually this indicates that the output transistors have failed. Any shop that works on audio should be able to repair this. Expect a part cost in the $20-$40 range. Add in the local labor rate for the total repair cost.


Posted on Dec 17, 2008

  • 2 Answers

SOURCE: My Harman Kardon receiver (

I used the live chat and the problem was resolved.
Usually the problem are strands of speaker wires which cause shorting and protection shuts off the receiver in order to prevent damage. There was one speaker that I repositioned recently which was causing shorting. I twisted the wires and tightened them in place and my receiver has been working w/o a glitch. I was lucky that I did not have to check all the wire strands on the receiver and all the speakers.
Problem solved and I learned valuable lesson.

Posted on Dec 28, 2008

  • 98 Answers


This generally means you've got a short somewhere, and the received is trying to protect itself.

My suggestion is to disconnect all of your speakers at both ends, and reconnect them.

Most times this happens because a speaker wire is lose, and the positive and negative connections are touching each other, causing it to short out.

Posted on Mar 25, 2009

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