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The radio is turning off and there is a message: system protect.

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The first thing you need to do is dis-connect all the speakers and then turn the unit back on. If it stays on and does not give the same error message, you may just have a bad speaker.

You can then plug one speaker back in at a time, turning the unit off in between each speaker check. Once the unit goes into system protect you have just found the bad speaker.

If the receiver once again goes into system protect without any speakers connected, you have an internal amplifier problem. That is something that would need to fixed by a professional audio technician.

If you have some experience with electronics and good soldering skills, I can help you troubleshoot this receiver. But if not, it is a very bad idea. You can easily cause even more problems than you started with. Even some very serious problems.

Let me know if this is helpful to you, and a good rating is always appreciated if it was.

If you need more help feel free to ask..

Posted on Jun 23, 2008

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Sony hcd-ec99i i have no sound from the speakers at all. I am not getting the protect message. please help

Check the simple stuff first

Is it muted?

Is the source selected sending signal (radio staion broadcasting, cd playing, ipod all the way ect)

Try doing some basic troubleshooting like,

see if all sources available yield the same result (TV, Radio, CD, Ipod, Aux jack)

When you turn the volume all the way up, do you hear an audible hiss from the speakers?(or use a test tone) If so, your amp is working and the problem is, your unit is not sending any signal to it.

If possible hook up your speakers to another system to rule them out, however I doubt that is your problem.

Here is sony's recommendation and a review video

Let me know what you get

SONY eSupport How to troubleshoot if there is no sound or intermittent...

Feb 03, 2014 | Audio Players & Recorders

1 Answer

Sony STR DE835 receiver - no sound from speakers and headphone jack

The problem is in the audio output semiconductors, they have shorted causing the fuses to blow and it is in auto protect mode to prevent further damage. I recommend a professional to assess.

Mar 10, 2012 | Sony STR-DE835 Receiver

2 Answers

My teac ag-790a 'protect' error message on display. When I brought it to the audio shop for repair it worked fine; at home again the same problem? What is the problem? Tx.

Check the putput wirings to speakers. If any of them has short circuit, the set will go to protection mode. You can understand it well, as it did worked fine at the repair shope. The set has no fault at all, but the wirings, connects to it have.
Just power ON the set at your home, without connection any output or input to it. See, it will not show any protection mode display. Switch it OFF. Connect the output to speakers, one at a time, and switch ON the set. Just do it for all other speakers. This way, you can find out, which speaker line causes the set to go to protection mode. Fine out the reason.
Never connect any input to the system, until works fine with out showing any protection display.
I helped you somewhat fine, I assumes.

Jan 31, 2012 | Teac Audio Players & Recorders

1 Answer

My stereo sysytem is a mini stereo: serial number 10200055. It currently says "protect", what is this and how do we return our system to normal operations?

Hi there,

When the word PROTECT appears on this display, this means the unit has detected a critical fault which could potentially cause harm to your stereo system.

The most common cause is a short circuit somewhere - something even as simple as loose speaker wiring could cause a short, triggering the Protect message.

You will need to determine if there is a possible short somewhere, so I recommend you start by firstly turning power OFF, disconnecting all speaker wires, then turn unit back ON.

Operate the stereo (without speakers) and turn volume up:
  • If Protect message appears when turning volume up, then stereo unit itself has an internal fault
  • If no Protect message appears, then suspect the speakers may be causing the issue.
  • Reduce volume and turn unit OFF
Re-connect speakers (ensure the connections are secure), turn unit ON:
  • If turning volume up triggers the Protect message again, there is an issue with the speakers or connections

Hope this helps.....

Sep 04, 2011 | Kenwood Audio Players & Recorders

1 Answer

Display says protection and turns off. Why?

The protection message means that a fault has been detected. The unit turns off to protect the rest of the system. Depending on the timing of the message, you could have an overvoltage at one of the boards, a problem with one or more of the speakers or a thermal issue. (The first two will trigger the unit turning off as soon as it is turned on. To check if the speakers are the culprit, unplug them and see if the receiver powers up properly.) If there is a heat build up, the unit will turn off after being on for a while.

The service manual is available for a fee here: .

I hope this helps.

Cindy Wells

Jul 17, 2011 | Onkyo TX-SV646 Receiver

1 Answer

Please help me i have a problem with my hifi .i got the message protect push power

This indicates a load problem in the system, turn power off! remove all speakers and wires, now turn the receiver on "this will reset the safety circuits" and turn the volume right down, If the word protect stays off it means there is a short in the speaker wires or one of the speakers. Now if the word protect comes on when you turn the receiver on "with all wires and speakers dis-connected" then it proves one or more of the audio output ic's are shorted, this is where a technician will be needed to further assess the situation.

Jan 25, 2011 | Audio Players & Recorders

1 Answer

My home stereo Sony when turn on the word 'protect' comes on and doesn't moves from there

"protect" usually means speaker wires are crossed or speaker ohm load is too low. if you have more than one speaker connected. if you did not change anything since the last time you used the radio the internal amp might have fried and you should have the radio serviced if the cost is worth it.

Dec 23, 2010 | Sony Audio Players & Recorders

1 Answer

Will not turn on. Message Protect

audi amplifier IC,s burned need to replace them

Jun 05, 2010 | Harman Kardon HK 3480 Receiver

1 Answer

Power On Displays Flashing "Protected"

The audio amplifier IC´s are on short circuit.

Jun 15, 2008 | Sony STR-DE535 Receiver

1 Answer


The main purpose of that "Protection" mode is to save the electrical circuits placed inside of the amp. Therefore; I think even if a case of short circuit caused by touching wires can not damage your amp completely but maybe a bit. You had better contact with a Sony service which is close to you. The second point is that your 5 disc Sony dvd must be fine. Don't worry about it.

May 05, 2007 | Sony STR-DE335 Receiver

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