Question about Sony STR-DE597 Receiver

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Everytime I put the volume up it cuts off saying protect...! How do i turn off the protect to allow sound to increase.?

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I would check all speaker connections and speakers, check the speakers with an ohm meter and compare the resistance with all matching speakers and on the nameplate if there is one, my amp did that last year and i found a burnt coil in one speaker ( center channel) hooked my old one back up and solved the problem for me. GOOD LUCK

Posted on Feb 01, 2009

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Automatic muting turns sound off


fijate well in output impedance, which is correct and coupled to the speakers not less, because it causes protection to the team after that can work well.

Sep 07, 2013 | Technics Audio & Video Receivers

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NAD 3020 amplifier cuts out on one channel as the volume increases with an audible click When the volume is reduced to zero, after a short time sound is available again on the faulty channel but cuts...


Swap the speakers to see if it correlates.

Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.

Apr 23, 2011 | Audio & Video Receivers

1 Answer

Everytime i try to play my system at full volume it cuts out then keeps playing and carries on doing this to i turn it to a certain volume


First of all find out the recommended speaker impedance for the receiver. Then find out the impedance of the speakers you are using along with it.
Simple rule is the speaker impedance can be higher but not lower than the recommended value. If it is so the receiver will run hot and if you turn up the volume higher it will run even hotter and then the protection circuit will cut off the Amplifier output to prevent burn out of components. Even if you have one defective speaker this cut off can happen. To confirm defective speaker -- disconnect one speaker at a time and turn on the amplifier and play it at cut off volumes.If by disconnecting one particular speaker the Amplifier does not cut off -- THAT SPEAKER HAS A SHORTED COIL and needs replacement.

Apr 03, 2011 | Philips Audio & Video Receivers

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If I increase the volume control, the sound goes out and the unit says protect


This is a piece of **** receiver. Ive had the same problem since it was brand new.

Dec 15, 2010 | Onkyo TX-8211 Receiver

1 Answer

When the protect lite comes on and the sound cuts out , what is it protecting ? the speakers or itself? thank you.


"Protect" is saving both really - but primarily the amplifier. The protector guards against shorted speaker wires, damaged and mismatched speakers, etc. If the amp is allowed to operate for a long enough time in this condition, permanent damage may result.

Usually, the lower the volume the amp is operated at will allow it to be played longer before the protect indicator comes on again. If played at a high level of volume, the protector will likely activate very quickly. Sometimes, damage to one or more output transistors seems to prevent the balance control from working correctly. You may find that you can only play the right channel at normal volume and the left is significantly softer - or not audible at all. This can be a fairly expensive repair - depending on the number of transistors to be replaced. Some factory service centers offer a flat rate repairs for this indication. Shipping these devices can be fairly costly however.

I hope this helps.

Jun 11, 2010 | Yamaha RX-V663 Receiver

1 Answer

Sound cuts out


No, this sounds like a speaker problem to me.
It sounds like the voice coils in your speaker(s) have been fried.
What happens is the part that is burnt does not funtion, but as you increase the volume/voltage the speaker "jumps" foward to a section of voice coil that is not as damaged.
Check your speakers!

Sep 07, 2009 | Pioneer VSX-816-K/S Receiver

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Sony STR-DE 697


Hi there. Sounds like you may have some wires that go from your stereo to speakers touching.Check all wiring and make sure none are touching especially behind you amp...

Mar 29, 2009 | Sony STR-DE697 Receiver

1 Answer

Sound cut-out


Most likely this unit goes into protect mode due to heat detection. Try to see if there is a pattern to when this behavior starts. Does a lower volume level allow the unit to run longer? Perhaps there is a problem internally that is allowing DC voltage to get to the output stage. This will cause excessive heat which can then cause the protection circuit to kick in. This unit may need to see a bench with some test gear to locate the exact problem. If you can, look for any pattern and update this.
Dan

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Shuts off everytime i turn it up pass 4.


Speaker wire contact with each other is the problem. Check the back of ALL SIX speakers including sub-woofer. You should find wires contacting each other. Fix that and your problem will be solved.

Barry Scholles
Strasburg, OH

Sep 04, 2007 | Yamaha HTR-5240 Receiver

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