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Receiver is playing, then sometimes it displays Protect and comes back on. Other times it just goes out and displays Check Pow 5. If I turn it on again it will sometimes come back on and then shut off again. Other times it will not come back and repeatedly displays Check Pow 5.

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  • mgarone Jun 04, 2009

    My receiver is Marantz AV Surround receiver ZR6001



    Thanks

  • mgarone Jun 04, 2009

    Did you receive my info?

  • mgarone Jun 04, 2009

    I have a Marantz AV Surround Receiver ZR 6001. While it is playing it will shut off and sometimes display Protect and come back on and other times it will shut off. When I turn it back on it displays Check Pow 5. Sometimes it will come back on after I repeatedly turn it on after it shuts off, but other times it will just display Check Pow 5 and not come back. This morning it shut down 9 times within 30 minutes.

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On your particular case Check Pow5 (supposedly a PSU problem) is instead caused by a defect on the main board.
Marantz often gives free replacement when Pow5 error does not clear.

Contact Marantz to see if the unit can be replaced or must be repaired.

If they say that repair is not covered for this model (it is for example on model 7001) , then read below. In that case the unit is on protect mode, and fault concerns PSU or main board.

Protect mode is a special diagnostic mode that starts when a fault is detected.

When in protection mode the unit is prevented from starting by protection circuit, so to prevent further damage.

Check the speakers and speakers wiring, a contact in speaker wires, or faulty speakers can send the unit in protection.

Try unplugging power cable for one hour or so. then connect cable back and see if you get rid of protect state. Sometimes accumulation of electrostatic charges inside circuit capacitors can kick in protect mode. In that case unplugging the unit from main for some times can get rid of electrostatic charges, and reset circuits by draining power completely.
If that was the problem, you will not get Protect when plugging back power cable.

If you do all the above and still get Protect, then there is a real fault.

In that case the unit may be disassembled and tested to find the fault.

If that is the case I suggest contacting the manufacturer at the number listed on the owners manual, or asking a quote on repair to a local technician.

Posted on Jun 04, 2009

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Hello sir, can you tell me the make and model of your receiver. usually when Check POW5 comes up its there is a little white wire inside the unit towards the back that controls the power. It's been "known" to come loose. If that gets put back the way it should be it's all good. 

Posted on Jun 04, 2009

  • Ajith Kumar Jun 04, 2009

    The PROTECT message is a safety mechanism built into the receiver to prevent shorting out the motherboard when you accidentally cross the frequencies that bounce between the + and - side of your speaker cable.

    Look top to bottom or left to right (however your speaker wire connects to your receiver). Make sure the Black/Red, pos/neg pairings are NOT touching.



  • Ajith Kumar Jun 04, 2009

    ok thank you sir. Did you check for your wires? protect message comes when wires touch as i told you earlier. please check that first and try your player again. 

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1 Answer

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Turn OFF receiver dis-connect all speakers and turn it back ON if it dosent go to PROTECT then some of your speakers or cables are shorted and should be changed. If it goes into PROTECT with all speakers dis-connected try factory reset ,if the problem appears again then you should take your receiver to some service for a check up. :)

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Receiver shuts down at random times with protect check pow 5 flashing briefly. It has been doing this for some time. I was told it was a solder point and the repair center tried to fix it but it is...


The most common problem found on FixYa for Audio Video Receiver's is:

My receiver say's "Protect" or turns on then off. What's wrong? Seven times out of ten it is a shorted speaker or speaker wire. To determine your exact problem, the first step is to disconnect all speaker wires "at your receiver" Next: Turn the receiver back on. If your receiver still says "protect" or turns off, it needs to be serviced. If your receiver stays on; reconnect your speakers one at a time and power back up after each speaker. You may find that after reconnecting all speaker wires it works! Most commonly the small braids of wire from the + to the - have touched and have caused the problem. In some instances, you noticed the problem only when turning the volume up. either way, make sure the exposed wires to your receiver are no longer than 1/2" long and are completely under the screw down terminal or slide in. When you've found the wire or speaker with the problem, your receiver will go back into "protect" At this point, disconnect the wire from the speaker at the speaker that may be causing the problem then test again.* Note* Make sure speaker wires do Not touch each other as this Will cause a short! If you turn the receiver back on and it stays on, you now know the problem is in your speaker itself. To test your speaker, you will need a multimeter. Set it to ohms resistance and touch the speaker terminals, if there is a short internally the meter will read "1......" If it's an analog meter, it will peg to the right. There's your problem. Now, within any speaker there are quite a few possibilities as to what could be causing the problem. Most common is a blown coil and the speaker needs to be replaced. Some speakers have internal crossovers (usually floor standing speakers) and may have a shorted or burnt board (usually very visible brown burn marks on the board) and can possibly be repaired if your handy with a soldering iron. Now, if you disconnect the speaker wire at the speaker and it still says "protect" Check your wire for the obvious cut or nail thru the wire if possible. If your system has wiring that runs behind walls, you may need to use your meter again. Disconnect the wire at both ends, keep the ends separated, put your meter on ohms resistance and touch probes to the + and - wires at one side. If the meter pegs to the right or reads "1...." the wire is shorted and needs to be replaced or repaired at the short. Hope this helps.

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1 Answer

My onkyo receiver say protect


If protect is coming up on the display, it means the system is detecting a short somewhere on one of the speakers and so is turning the amp off to avoid damage.
Check all the connections at the back of the amp to ensure they are not shorting, and at the back of each speaker, if nothing is found there, check each wire for damage (like squashed or rodent damage).

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When i switch on my samsung HT-Z110 the word hello appears then protect thenit turned off!


Audio receivers have an output protection circuit called "protect mode", this is to protect the receiver from short circuit failures.The speakers and speaker wires are what I inspect thoroughly first, look for bare speaker wires,or bare wires that are touching each other at that point,check speaker wires at the back of the receiver for sloppy connections,etc.If all looks good then try disconnecting all the speakers at the receiver,then turn power on to see if it goes into "protect mode", if it does the the receiver probably has an internal short and will need to be sent in for service,if it doesn't go into "protect mode" then connect one speaker at a time back into the receiver until it does go into "protect mode" then which ever speaker you connected last is the speaker that is shorted(blown) and then you know that speaker is the problem and it will need to be replaced or repaired. Good luck !

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Is the red light flashing at first?
The unit may be going into protect mode. Lets hope it has done the job and the receiver has protected itself from failure.
Protect mode can result from speaker wires touching each other or the Amps2_bing.gif metal case. Check that first.
It can also be caused by unstable ohm loads if too many speakers2_bing.gif are connected to any of the outputs especially zone 2.
If you can remove all speaker wires and turn the unit back on. If it stays on, turn the volume down on the main zone and zone 2 if connected. Then reconnect speaker wires.

Nov 16, 2009 | Denon AVR-485 Receiver

1 Answer

Protect appears on display on kenwood kdc 3034


Disconnect all the speaker wires at the receiver and turn it back on. If itdoesn't go into protect mode, your receiver is ok.

Reconnect the speakers one at a time being sure to turn the receiver off each time you connect a speaker and turn the receiver on until your receiver goes into protection mode again.

When it goes into protect mode again, the last speaker you connected has a problem. Trace the speaker's wire to the speaker looking for cuts or shorts along the way.

If you have a multimeter, switch itto ohms and check the speaker for a dead short, if you show a dead short you have a blownspeaker. Hope this helps.

--Matt

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1 Answer

The receiver goes on standby mode when volume is high


Your receiver is basically going into protect mode.

The SR 605 contains a microcomputer for signal processing and control functions. In an unlikely event, it may cause it to lock up. Unplug the power cord from the wall outlet, wait for 10 to15 seconds and then plug it back again.

Please also check your speaker cabling again. Make sure that all of them are seated properly, none is touching each other or the body of receiver. Take out all the wire and put them back again if necessary..
Some times even a little tiny frayed wire touching the receiver could trigger the protect mode. Be careful, since protect mode is sometimes not fast enough and it could blown a few trasistors in the power circuit.
Just check your speaker as well....whether they play all right thru another receiver or amplifier. its posiible they might be shorting inside. A little frayed wire could also trigger the protect circuit in your receiver.
I hope this should solve your problem. If you still can’t resolve the issue yourself, try resetting
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To reset the Receiver to its factory defaults, turn it on and, while holding the [VCR/DVR] button, press the [STANDBY/ON] button. "Clear" will appear on the display and the Receiver will enter Standby mode. (note that resetting your receiver will delete your custom settings as well as your radio presets).

If everything else seems all right and still your receiver shut down when you raise the volume then it possible that there are bad connections on the main board that are set in.

This would generally happen if the system is slighly old or have dry solder and when you raise up the volume. This should be a simple repair that will not require parts. If you can solder, you will be able to repair this yourself. If not, then a local service center will change the local labor rate.

Hope you can sort out your problem with the above trouble shooting. Let me know if I can guide you further.
Best of luck. Thanks for using FixYa!

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1 Answer

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Just check your speaker cabling again. Make sure that all of them are seated properly, none is touching each other or the body of receiver. Rewire if necessary..
Are you using banana plugs for connecting speaker or just directly. Some times even a little tiny wire touching the receiver could trigger the protect mode. Be careful, since protect mode is sometimes not fast enough and it could blown a few trasistors in the power circuit.

Otherwise, do your bose speakers play out load on other systems?

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there may be broken soldering points in the receiver take it to a workshop or open it your self and check it on the power source

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