Question about Kenwood VR-4090 Receiver

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Receiver Shutoff My receiver shuts off when high frequency/high volume sounds occur during a movie. I have retested it and found once it reaches -30 volume for this specific sound, it shuts down. The receiver power light blinks on/off. What is going on? Any ideas, help. I also have an unusual item with the Left Rear Surround Speaker - I get a lower volume from that speaker and some coming out of the center channel. I have tried to adjust the volume setting for the speaker to the max, but still have problems. Thanks,

Posted by BIll Pierson on

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That may be a clue to your shutdown problem. Disconnect that speaker and see if the unit still shuts down. If it does not, then there is a problem with this speaker,or the wiring going to this speaker. If the unit still shuts down, disconnect each speaker at a time to see where the problem is. If none of the speakers seem to cause the shutdown problem, there is na major fauly in the amp circuit, so the amp will need serviceing or replacement. Good Luck

Posted on Apr 08, 2007

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I have a Yamaha HTR 6180 reciever and 2 AR 328ps speakers one of the speakers when turned up with shut the reciever down I did a prosses of elemination and took each speaker out of the tower individually...


A capacitor is more like to fail than a coil, so I would also suspect a cap first. Capacitors conduct high frequency more than low frequency, so this may explain the extra load and shutdown on high frequencies.

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I think this is the answer you are looking for.

Let me know if you need more help.

Knowledge Article C337191 Error: The message PROTECT or UNPLUG shows in the display.
Follow this procedure to troubleshoot when a PROTECT or UNPLUG error is displayed.
IMPORTANT: The top of the receiver must have proper ventilation to keep from over heating.
  1. Reduce the volume level.
  2. NOTE: If the receiver is played at the maximum volume level it may enter the PROTECT mode. Maximum volume listening will cause the receiver to run hot and drain the output capacitors.
  3. If both the A and B speakers are being powered by the receiver at the same time, turn off the surround sound option.
  4. If protect occurs only when using a DVD player, the sampling frequency may be set too high.
  5. NOTE: Some receivers provide compatibility with the higher sampling frequencies through alternate connections. Consult the user manual for specific information.
  6. Ensure the speaker wiring is not damaged and is properley connected to the back of the receiver and speakers.
  7. If the issue is still unresolved after completing all of the troubleshooting steps, service may be required.
Created: Thu Sep 16 14:49 2004 | Last Modified: Wed Jan 11 09:02 2006
http://www.iq.sony.com/srvs/autoresponsev4.asp?id=337191

Feb 13, 2008 | Sony DAV-FC7 System

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SONY STR-DE445 UNLOCK CODE


Follow the steps below to troubleshoot if the word PROTECT or PROTECTOR is flashing on the A/V receivers display.

  1. Check the speaker wires and speakers for proper connections.
  2. Reduce the volume level. IMPORTANT: If the receiver is played back at maximum volume level it may enter the protect mode. Maximum volume listening will cause the receiver to run very hot and may drain the output capacitors.
  3. Disable the surround sound option if both the A and B speakers are being used simultaneously.
  4. Ensure the top of the receiver has proper ventilation to keep it from overheating.
  5. If the message only occurs when using a DVD player, the sampling frequency may be set too high. IMPORTANT: Some receivers provide compatibility with the higher sampling frequencies through alternate connections. Consult the owners manual for specific information.
  6. Unplug the AC power cord for about 1 to 2 hours to reset the output transformers.
If the issue is still unresolved, service may be required.

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1 Answer

AVR SR6004 switches off while BD player is playing. What do I do?


Hi,
There are two circumstances that I know of that a properly installed unit such as your Marantz would shut down. So here is the Theory and Data I know of.
A Your receiver has a great deal of amplification power. If it is in a closed cabinet without excellent ventilation, it will shut down if used at high volumes because because over heating. Because of it's very high power, when played loudly, it generates excessive heat.
When watching certain movies the BD player may be over-driving the limits of the amplifier section of your receiver. Page 78 of your owner's manual addresses this. Here is a link to download the manual from Marantz.
http://us.marantz.com/us/Support/Pages/Manuals.aspx
B There is one other very important thing I should mention to you. When people use high powered equipment and initially turn up the sound. After a short time, the mind turns it down. What next happens is the reason professional musicians and sound engineers often have permanent hearing loss after a relatively short time.
What tends to happen is that the listener and often the engineer running the sound mixing board at a concert(after a certain period of time) believes the sound is not loud enough when it really IS loud enough. (this tricks the audience as well) and engineer turns it up. After turning it up, his mind (and the audiences') turns it down mentally and they again think and agree that it not loud enough and then again, the volume level is turned up. And up. And up. The only reason I'm not deaf is that I discovered this when I was building sound systems as a kid. I also studied about it. So please be careful when you play things loud. Permanent hearing loss starts to occur at the very high frequencies and rolls down from there over a period of time. Hearing loss can start to occur in just a few hours at 110 decibels. permenant hearing loss is exactly just that. Permenant! It just doesn't come back. If you use this information, you will enjoy hearing music for the rest of your life.
I hope this helps,
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Avr Shuts down at high volume


It does that because there is a safety feature in all the newer devices. If your system is turned up to high you would blow your audio outputs or speakers. That's why it shuts off.

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you may be using an equalizer? try to pop-up the volume with all tone controls in flat mode. see if it still cuts off. if this is the first time youencounter this then something must be wroing with either your speakers or your amp. unless your ventilation is not good enoughg, you can also try placing a blower on top of your unit to cool it down

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