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Protect flashes in display

I connected 2 more speakers (4 total now) if I turn the volume up higher the things flashes protect & no sound comes out. Turn off and on & lower the volume & if works sometimes

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

techman
  • 3130 Answers

SOURCE: Denon AVR-810 going into PROTECTION mode

It sounds like there is a problem with the differential circuit. The bias I am not sure about, as every unit is different. You should get the service manual to be sure or call Denon and see if they can give you an idea. Good Luck

Posted on Jun 05, 2007

  • 15 Answers

SOURCE: Sony amp str-db940 - protection

Somewhere in your speaker wiring, you have a shorted wire. This short can be as simple as a single strand of wire touching the other terminal on one of the speakers.

With a bright flashlight, look carefully at the back of the receiver and then the speakers for any loose strands.

Posted on May 27, 2008

SOURCE: when you turn on the avr 600 the display says "protect"

The Control IC broken

Posted on May 31, 2008

dunnbiker
  • 8546 Answers

SOURCE: STR-DE475 receiver flashes "PROTECT" when turned on

Protection is usually a sign of overheating or something is wrong at the power amplifier's output.

Theory: Protection is a delay and sometimes an internal test to allow the electronics to stabilize during power up before they are allowed to interact with the speakers. The most common cause of it remaining ON is that a speaker cable pair is shorted. Some isolation is required...

1. Turn the Power OFF.
2. Disconnect each set of the speaker wires that are directly attached to the receiver. Mark them so you remember where each one went. pay special attention to which conductor is on "+" or "POS" and which is on "-", "COM" or "Ground". You may elect to disconnect them one pair at a time if your sytem is complex and you don't want to lose track of where things were.

Turn the Power ON. Is the "Protect" indication gone from the display?
--------------------
If YES, you have a shorted speaker wire or speaker. To isolate the specific cause:

1. Turn the Power OFF.
2. Attach ONE speaker wire pair at a time and test it by turning the Receiver ON. When the "Protect" light returns you have isolated at least one of the cause(s). Disconnect the defective speaker cable and continue isolation of all speaker cables. Visually examine the cable at both ends for frayed wires that could touch each other or contact metal on the receiver or other objects.

To isolate further within the cable/speaker pair - disconnect the speaker end of the cable on the failing path. Try another cable that you know works, or at least one that doesn't cause Protection to stay on.

If you're electrically savvy and have a Digital Volt/Ohm Meter you can troubleshoot the short(s) with it.
-------------------------

If NO, there is probably an internal problem.

Is it solid or does it come on after the Receiver has been ON awhile.
It could be overheating.
Is the unit hot to the touch?
Is there a cooling device (fan)?
Is it stopped or clogged with dust?
Is there adequate ventilation around the unit for air to flow?
Clean any ventilation slots on the top and bottom of the unit.
Avoid stacking components that produce heat under an amplifier or receiver. Their heat rises. Also keep them away from other heat sources like like home heating vents and radiators.

Problem solid and NOT related to the speakers or heat: internal malfunction.

Let me know.

Posted on Apr 02, 2009

  • 40 Answers

SOURCE: Sony STR K840P, protect mode is flashing,no

This is a classic problem. One of your speakers is miss wired and or your speaker wires positive and negitive leads are touching. Check all connections from the back of the reciever to the back of the speakers to make sure your positive and negatives are correct and that none of the wiring is crossed or touching one another.

Posted on Jul 25, 2009

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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.

Feb 11, 2012 | Audio Players & Recorders

1 Answer

NAD M3 power light turns red immediately and PROTECT message displays. Amp keeps functioning but volume control doesn't work up or down.


Hello
Check the connection to speaker with this amp, for any short or any other fault. disconnect the outputs, ie, speakers from the amp, and switch it On, and see the protect display comes or not. If it comes, the fault is internal and the set need service.
Your M3 dual Mono integrated amp, is of high output power and its outputs are protected against any overload or short circuit. If the system detect any among this condition specified above, it will show protect mode display.
Never load this amp, as protection display is there, as it may damage the speaker or its internal power amplifier section circuits, may cause more money to get it repaired. OK.

Jan 23, 2012 | NAD M3 Master Series Integrated...

1 Answer

When I turn on my Home Theater Sony Model hcd-hdx576wf this message appears, "protector, push power". what I can do?


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.

Dec 17, 2010 | Sony Televison & Video

1 Answer

SONY HT-5500D PROTECT IS FLASHING NO SOUND


Protected in short means that the amp is no longer powering the speakers due to one of the following: 1. Volume is up too loud 2. Equipment Failure 3. Dirty power
Turn amp on by pressing the function button on the remote of a source that has nothing on it or is not powered on. If it still says PROTECTED even though you are on a source with no sound coming in, then the equipment is in need of repair. If it simply comes on normal displaying the source turn the volume down till it says MIN. Find the range of your speaker and amp power by selecting a source with music or movie audio and slowly turn it up till either its too loud or says protected. Be sure to double check all speakers and wires to ensure wire integrity as well as proper connection.

Jan 11, 2010 | Sony HT-5500D System

1 Answer

After turning ON the power/standby switch, the unit(receiver) display comes ON (green light) then after approx.4-5 seconds the display goes OFF and the unit defaults back to the standby mode (red light). I...


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

Flashing message on my reciever


PROTECT, PROTECTOR or the letter P is flashing in the display of the A/V receiver. Solution
sp.gif sp.gif 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: Ifthe receiver is played back at maximum volume level it may enter theprotect mode. Maximum volume listening will cause the receiver to runvery 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: Somereceivers provide compatibility with the higher sampling frequenciesthrough alternate connections. Consult the owners manual for specificinformation.
  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. The Sony® eService Web site at http://eservice.sony.com/ can assist you in obtaining service from a Sony Service Center or locating a Sony Authorized Servicer.

Dec 15, 2008 | Sony STR-DE545 Receiver

1 Answer

Onkyo tx-sv727 Protect displayed


first thing if it says protect, check the fuses inside the system they may of blown .When choosing wire gauge, consider the quality of your components and speakers, the overall sound quality you're trying to achieve, and the budget you're working with. Also, keep in mind the distance between your receiver or amp and your speakers long wire runs can cause significant power losses, and thus require thicker cable. You can use this as a guideline
Distance from speaker to amplifier Gauge
Less than 80 feet 16
80 to 200 feet 14
More than 200 feet 12

Nov 02, 2008 | Onkyo TX-SV727 Receiver

1 Answer

Onkyo ts595 goes into protect mode with volume increase


HI check your speaker cables are not touching, also make sure "b" speakers are not on and that all your speakers are 4ohm or higher as this will cause the amp to shut down if they are to low an impedeance,The amp is protecting itself when it shuts down.

hope this helps.
CABLE GUY.

Aug 03, 2008 | Onkyo TX-DS575 Receiver

1 Answer

Need help


Have you connected an extra pair of speakers?. (Thereby loading the amp stage beyond it's capacity)
Are the speakers connected to the unit the original ones the system came with or different? ( Speaker impedance, usually displayed at the back of the speaker cabinet must not be less than amp's specifications....6 ohms, 8 ohms)
If you're driving the unit excessively you're lucky this piece is equipped with protect mode, else your speakers and amp would have been fried by now.
One last possibility comes to mind: High volume causes vibration causing loosely fitted mains plug to rattle in wall socket calling "protect" due to improper feed voltage. Move the unit to another wall socket and ensure a tight fit into mains receptacle.

May 20, 2008 | Sony STR-DE197 Receiver

2 Answers

Trouble shooting a Denon Reciever


I just picked up a non working AVR 900, there are a total of 4 fuses inside the unit: 2 on the protect board, 6.3A and 8A, and 2 in the middle near the front. I was told by Denon the following might reset the microprocessor. 1) unplug unit 2) press and hold tuner and video select on front panel 3) plug in while holding buttons Unit display should flash until you let go of buttons. Unit stays on you should be ok/ goes back to red- service They also said: There are 3 types of protection that will commonly occur with our receivers. This is designed to protect the unit from permanent damage. 1) Thermal Protect = When the unit overheats this will occur, usually if there is not enough air space above and around the unit. There cannot be anything directly on top of the unit and there must be at least 4 inches of airspace above the unit. 2) Overload Protect = Most commonly occurs when a strand or more of copper speaker wire is not securely connected to the speaker terminal and is touching the chassis of the receiver. If the volume is turned higher than 85% this may also occur. If you need to turn the volume higher than this point to get the level you want, you need a more powerful amp. 3) DC Protect = When an amplifier fails this will occur. This will protect dc current from damaging the speakers. When this happens the unit will need to be serviced. I had a bad 6.3A fuse ? I replaced it and tried to reset. The microprocessor would not reset. I had the exact same results you had. The chip on the back side of the front IC board was smoking. Before I attempted the reset I asked Denon if it was worth sending in for repair. The answer was "NO" BC

Apr 20, 2007 | Denon AVR-900 Receiver

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