Question about Sony STR-DE935

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Protected display came up 3 or 4 times

My speakers crakle and pop loud about 45 seconds after powering up the reciever, even with the volume off. Can I fix this , or, shop time?Thanks

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Re: Protected display came up 3 or 4 times

Sony has a trouble-shooting procedure on it's website:,Kb=CISCV3,Company={46BFA530-E01F-4F7C-B98B-69C2AA06051B},Case=Obj(215444),TS=externalv4,T=case.tem,VARSET_MODELNUM=STRDE935,VARSET_OBJ=215444,VARSET_TOP=TRUE,workstage=all,question=ref(QC):ord(1),question=ref(QB):ord(1)#

Posted on Dec 29, 2007

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The word Protected shows up on the reciever! I tried to clean out the bad grease on the Volume control. The remote got so sluggfsh it would hardly move.

Protected is usually the unit has partially shut down to prevent further damage or burning up. The high power amplifier section is shorted or the speaker wires are shorting, including speakers. The speaker wires can be checked and eliminated as a problem, where frayed wires are touching the other terminal or a bad shorted speaker. If all external short have been eliminated, a technician would have to fix internal short.

Nov 15, 2010 | Sony STR-DE915

1 Answer

My reciever plays then cuts out

They don't overload from missing speakers. I'm curious, what buggered the one speaker?

Examine all of your speaker wires carefully to be sure no unintended contact is made between them and anything else.

Is "overload" being displayed?

“OVERLOAD” starts flashing on the display.

Speakers are overloaded because of high volume.

1. Press STANDBY/ON on the front panel to turn off the receiver.
2. Stop the playback source.
3. Turn on the receiver again, and adjust the volume.
Speakers are overloaded because of short circuit of speaker terminals.

Press STANDBY/ON on the front panel, then check the speaker wiring.

If “OVERLOAD” does not disappear after turning on the receiver again, unplug the AC power cord, then plug it back in again.
If speaker wiring is not short-circuited, contact your dealer.

Mar 31, 2010 | JVC RX-6042 Receiver

2 Answers

Getting out of protect mode I have a Denon 787 receiver. It was working fine for 8 months. All of sudden, my reciever goes into protect mode after playing for about 30 min. Right after it goes into protect...

most of the receivers come with a cooling fan inside see if its working they usually work when you turn the volume up,, if its working that means you are playing it to loud if you lower the volume a little it will play just fine..( if the fan inside is not working thats the reason it goes into protect mode and it means you must have it repaired,, it goes into protect mode to prevent furter damage to the unit or the speakers,,

Dec 18, 2009 | Denon AVR-787

1 Answer

Enters standby after being on for only a few seconds.

Sounds like either the volume is turned up too loud, or you have a short. Have you tried disconnecting all the speaker leads from the rear, and then powering it on? Usually if it turns on for a short time and then shuts off, it is throwing itself into protection mode.

Sep 07, 2009 | Yamaha RX-V363 Receiver

1 Answer

My reciever is shutting down completley when i try to turn on the second zone. i tried rewiring it but it still does it could it be the reciever or do i just have the settings incorrect?

if the reciever shut down with zone 2 on, zone 2 volume at -3 and nothing connected to zone 2 it needs repair if not reconnect the speakers to zone 2 speaker connections and make sure you do not have more than 4 pair of speakers with impedence matching volume controls or a impedence matching speaker selector box

Jun 15, 2009 | Denon AVR-785 Receiver

1 Answer

My reciever turns itself off

You most likey have a wire short on your center or rear surround speakers. The wire short will be between the + and - points of the speaker wire.

To find the problem speaker, disconnect one of the 3 speakers at a time from the back of the sony and see if the problem goes away. Once you identified the offending speaker, check both the sony side and speaker side for the short. The small wire strands are hard to see and it only takes one to trip the protection mode, so look carefully.

Mar 07, 2009 | Sony STR-DE845 Receiver

1 Answer

No sound driver

Turn the power off. Wait about 10 seconds,then power up again get close to the reciever and listen for a click-not from the speakers ,fromthe recievers itself.If you hear a click,you can assume that the power supply is ok for that cercuit.This does'nt eliminate the power supply,but it will do for now.Put the speakers close to the reciever,what you will do now is to power up the reciever while listening to the speakers with the volume off.In about 3-5 seconds you should a hear a slight click from the speakers. Try this with both speakers if you don't plug in a pair of headphones to the headphone jack and play the source . If you still no sound with headphones you at least now know that the output transistors are not the problem or the only problem.The power amp., section are defected also.Message whatever happens.

Jun 17, 2008 | Audio & Video Receivers

3 Answers

Onkyo HT-R501 7.1 reciever issues

i have the same problem with a onkyo tx ds494

Jan 05, 2008 | Onkyo TX-SR605 Receiver

1 Answer

Avr 3806 power shuts off when volume turned up

Hello david 420

It looks like your receiver's high-speed protection circuit is being activated. It is definitively not a fuse. When a fuse pops, you have to physically replace it. When the protection circuit is activated, the speaker output is cut off and the power supply indicator flashes. There are a few reasons why this happens:

1.- Your speaker wire connections are loose. Whether they are banana plugs or bare wire ends, make sure the speaker terminals on the back of your receiver are tight using clockwise turning.
2.- Verify that your speakers have an impedance between 6 and 16 ohms. Your receiver was designed to work with that impedance range. Any impedance lower than 6 ohms will activate the protection circuitry.
3.- The receiver is used at high volume levels over a long period, which results in an
extreme temperature rise. Improving the ventilation conditions around the unit might help alleviate the problem.

If after complying with these suggestions, problem is still present, you might need to have the unit checked by a professional for possible circuit failure.
Hope this helps. Let me know.


Dec 31, 2007 | Denon AVR-3806 Receiver

2 Answers


Read the manual. You've either got crossed speaker wires, it's overheating, or it's a more serious problem. The same just started happening to mine, so I'm taking it in.

Oct 03, 2007 | Denon AVR-886 Receiver

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