Question about Sony STR-DE425 Receiver

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Protection error Good Day, When we turn on the reciever we are hearing clicking noice and receive a protection on the screen that blinks and we not allow us to connect to anything, How can we correct this error? Thanks,

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Re: Protection error

Your speakers or the wiring to the speakers shorted out, and a fuse inside of your receiver is blown. You can purchase a new unit or attempt to replace the fuse yourself.

Posted on Dec 05, 2007

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SOURCE: Protection error

I was having this problem and after research on internet found that this could be because of speakers wire being short. I recheck all the connections and most likely have short due to wires being stapled on the wall and staple causing short. It is working fine now for me. Check your wires...

Posted on Jan 01, 2008

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Can not get surround sound to work

Your Protection System probaly come on for some reason,Sony Is Known for that problem, Check on your screen if a red lit warning Staying (protect) Is on.If there is, Try hiting the reciever on the sides or the top of the cover fairly hard when it is turned on, Some times this will work to turn the protect light back off, Sony is bad for there amps end recievers going into the protect mode,

Sep 19, 2012 | Sony STR-DG600 Receiver

1 Answer

When i turn power on it came on and says protect then turn off..please help

The reason why this is happening is because the reciever is going into protection mode due to a short circuit to the amplifier. It might be a speaker that is shorted out internally or there might be some speaker wires making contact with each other at the back of the reciever or at the speaker. The first thing I would do is disconnect all the speaker wires from the back of the reciever(make sure to label them before removing so you know how they go back). After removing the speaker wires turn on the reciever and see if it goes into protection mode. If it does then there is a good possibility that the internal amplifier might have a short. If it does not go into protection mode then that is good because there is more than likely a short on one of the speaker wires or speaker itself. Now connect one set of speaker wires at a time. After you connect each one try turning on the reciever until it goes into protection mode again. When it does you will have your culprit. Then try swapping speakers with that problem wire set and see if it still does it. If it does then it could just be the wires but also switch the wires to verify that the amplifier does not have a bad channel. If swapping both the wires and the speaker swapping produces the protection mode then that channel for the amplifier will be defective. I hope I have not confused you too much.

Aug 17, 2010 | Audio & Video Receivers

1 Answer

My denon avr1200 receiver once it is turned on goes into Protection mode. How do you reset or make work?

The reciever will go into protection mode when there is a short in the speaker wires or the amplifier was overloaded. What I would do first is verify that none of the speaker wire connections are loose at the back of the reciever or at each speaker. And verify that none of the wires are making contact with each other. Then label each speaker wire as you remove them from the reciever so you can re-install them correctly. After you have disconnected the speaker wires try unplugging the reciever for 10 to 15 minutes. Most recievers have a self-resetting overload protection switch and this should reset it back to normal. Now try plugging the reciever back in and turn it on without the speaker wires connected. It should be out of protection mode now. If it is still in protection mode verify that there is not a reset switch somewhere on the back of the reciever. If it is not in protection mode now then proceed to connect one speaker set at a time and turn on the reciever to see if it goes into protection mode. If it goes into that mode after connecting a speaker then that speaker is the cause of the problem. If it does not go into the mode after all speakers are connected then try turning the volume up. If it goes into protection mode then there could be an internal short on the amplifier or a incorrect OHM rated speakers connected to reciever. Verify that the speakers are rated the correct OHMS.

Feb 22, 2010 | Denon AVR-1200 Receiver

1 Answer

I don't get any front display or any sound when turned on.

Do you hear any clicks? If not, the standby transformer or related circuitry is bad. If you hear 1 relay click...the audio output section is most likely the problem. The first click you hear is the main power relay...and should see display.. the second relay click is the protection circuit relay engaging to let audio to your speakers...if the second click is not heard (it should occur in 3 to 5 seconds) there are shorted output transistors or a shorted output IC trying to blow your speakers with 50 to 75 volts dc. The protection circuit monitors the speaker lines for voltage. They should always read milli-volts only...not even 1 volt.Anyway, good luck

Sep 24, 2009 | Sony STR-DE525

1 Answer

Reciver turns on then rapidly turns off

the click is a protection switch. one of the power transistor or protection tranisitor is defective.

Aug 22, 2009 | Audio & Video Receivers

1 Answer

Power will not stay on

Activated protection circuitry means that the amplifier is seeing conditions it does not like and is shutting down the power to prevent further damage.
Either you have a short in your speaker wires, in your speakers, or a blown amplifier.
Disconnect both speakers and turn on the amplifier. Does it still give the error message? If it does, your amp is blown. If it does not, carefully inspect your speaker wires and their connection. Make sure all looks good and reconnect the speakers and try it again. Still get the error message? You likely have a problem in your speaker cabinet(s).

Apr 21, 2009 | Onkyo HTR500 Receiver

1 Answer

Reciever power

It is going into protection mode. If you feel comfortable with directions look for the service manual and get the codes that are causing the protection error then you can find out how to fix it.

Nov 08, 2008 | Yamaha HTR-5730 Receiver

1 Answer

Onkyo TX-NR905 Protection Circuit Activated

The problem is not with the inputs. This unit is in protect because a problem has been detected in the output section. Try disconnecting the speaker wires and turning it on. If the unit remains on, there is a short in one of the speaker wires. If the unit still shuts down, there is an internal problem that will require repair. It sounds like this is a new piece. If so, it should be covered under warranty.

Keep us posted,

Jul 28, 2008 | Onkyo TX-NR905 Receiver

4 Answers

Amp comes on and goes right into protection mode

Turn the reciever on for a second or two and then off before the protect mode shows up on the monitor. Repeat this step about five times and check to see if the reciever does not go into protect mode. If it does go into protect mode try it again. Dont know if this is the proper way to fix the reciever but it worked for me. Good Luck

Mar 09, 2008 | Audio & Video Receivers

1 Answer

Protection error

I was having this problem and after research on internet found that this could be because of speakers wire being short. I recheck all the connections and most likely have short due to wires being stapled on the wall and staple causing short. It is working fine now for me. Check your wires...

Dec 02, 2007 | Audio & Video Receivers

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