Question about Onkyo TX-8011 Receiver

1 Answer

Display indicates "Protection" and unit shuts down. What causes this and how can I correct? Will a shorted speaker cause this?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Onkyo Master
  • 1,114 Answers

Yes, there are two ways to check this, either disconnect all the speakers at the speakers or do the same at the receiver. I would start at the receiver, this is the most common problem of all AV users. Disconnect all speakers (with the receiver off) then turn it on. If it does not go into protection it is either a wire or a speaker, the best way to troubleshoot this is to reconnect each speaker one by one making sure you don't have any excess braid hanging over the pins then turn on the receiver. repeat until the unit goes into protection or, you've solved the problem. If you find a speaker with a problem, if possible replace the speaker with a known working speaker and test again. If it still goes into protection, run a new speaker wire and test again. At this point if it is still going into protection, you may need to get it to a repair house or AV store, have them bench test the unit for you first, then if needed, send it out for repair. If you need any help at all during this, post a comment and I will help some more.

Posted on Jun 26, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How do i reset avr-1705 denon amp?


Before you reset, are you doing this because the amp went in to some sort of protection mode?

Resetting will allow the amp to redo the self diagnosis. But if the problem remains then the amp will shut down again. Resetting doesn't fix things like bad wiring or blown output transistors. So only reset once you are sure you've checked through the system for any problems.

As a safety measure, disconnect your speakers before doing the reset. If the amp goes in to protection again then it is an indication that there are either shorted speaker outputs inside the unit.

Unplug the unit from AC power for 30 minutes, and disconnect all of the speakers and other associated equipment. Upon plugging back in, press and hold the power button at the same time for 5-10 seconds to force a hard reset.

If the unit starts up normally start connecting the speakers one at a time (shutting the power down before connecting each one), until one of the speakers causes the receiver to shut down. This speaker is faulty and would need to be replaced.

If the unit does not power up with NO speakers connected, then it needs the output transistors replaced inside the unit. These directly drive the loudspeaker outputs on the receiver itself, and one or more of them being shorted (closed circuit), will trigger the error on the display of the receiver, and it will not go off until the problem is repaired. They are not user-replaceable as they are PCB mounted, and thermally coupled to a heatsink. In this case, the unit is in need of service.

Sep 02, 2014 | Denon Audio Players & Recorders

Tip

My Pioneer displays Overload


Overload is displayed when the amp draw is excessive, and can be caused by different faults.
when Overload is detected, the protection circuit will shut down the unit to prevent further damage.

The first thing to try is hard reset. Shut down the unit for about one hour to drain power completely.
This can fix minor problems that can cause overload, for example electrostatic charge accumulation on internal capacitors.

If that does not fix the problem, then you must find the fault.

Overload can be caused by shorted speakers, wrong impedance speakers, or by a contact on speakers wiring.
Check speakers connection and test different speakers with 6, or better 8 Ohms impedance.

Another test can be done by unplugging all speakers, and reconnecting and testing them one at a time, at a very low volume.

If the speakers are OK, then preamp, shorted input/output connectors, main power supply or faulty output transistors can draw too much amps causing overloading.

In that case it is recommendable contacting Pioneer at the number listed on the owners manual.

on Jun 22, 2009 | Pioneer VSX-D608 Receiver

1 Answer

How do I reset a technics sa-gx350 receiver unit


Don't know that you can actually reset this unit like the new digital receivers. It does have protection circuitry that will shut the unit down in case speaker wires are shorted or if speaker impedance is less than the indicated rated impedance of the amp. do the following:
1. Turn off power and unplug from wall.
2. Check all connections and correct if needed.
3. Turn back on after 1-2 minutes.
If unit is still in protect mode you may want to unplug everything from the unit and then power back up to see if the problem is internal or external. If it powers up correctly then the problem is external. Power back down and plug in one external item at a time and power back up between connecting each item to see which item causes the receiver to go into protection mode.
If problem seems to be internal I'd recommend taking to an electronics repair shop if you aren't comfortable with taking apart to check fuses, terminations, etc. There may be a 5-amp fuse in the power plug head also.

Oct 21, 2013 | Audio Players & Recorders

1 Answer

Speakers work at low volume. Around -39 db, receiver shuts off.(protection mode) Tried moving speaker wires, alternating red and black. No go. When powered back up, display says ck sp wires. Once I...


Decibels correspond to the output voltage being sent to the speakers. In your case, the voltage is reached at -40dB is the threshold that causes whatever is happening to operate the receiver's protection circuit. You might have a bad speaker, with a voice coil that shorts at the higher voltage. Below that level it's okay, but at the magic point the insulation breaks down, and that's when the receiver sees trouble.

You might try connecting only one speaker at a time using a short length of wire other than your current ones. If the trouble occurs on one speaker only, you've found the culprit. If the receiver operates normally on each speaker, try reconnecting one speaker at a time to determine if one of the speaker wires may have a short somewhere. There might be a weak spot in the insulation, not causing any trouble until the voltage is high enough.

If the receiver still goes into protection with just one speaker, there's an internal problem. Some part in the amplifier may be breaking down at that voltage. Or a part value has changed, causing the protection circuit to kick in even though there's really nothing wrong. Bad solder connections may have developed. Unfortunately, this kind of problem usually needs the services of a shop with the equipment and circuit information to figure out what's happening. If you can find a Yamaha-authorized warranty servicer, they might already know some typical causes if they've seen units with the same trouble.

Try the speaker test first. Then let a shop tackle the receiver if it looks like that's where the fault is. Good luck and thanks for using Fixya!

Jun 03, 2011 | Yamaha HTR-5830 Receiver

2 Answers

My phoenix gold x200.4 amp turns on but the protect light keep on flashing


  • What does it mean when the LEDs flash on my amplifier?
    With most recently produced Phoenix Gold amplifiers, a flashing/blinking LED is an indication that the unit is in protect mode, usually due to an overcurrent condition caused by an internal short, external short (speakers), or low impedance. Overheating will also cause the amplifier to shut down temporarily.

    If amplifier remains in protect mode, power down the amplifier, disconnect the speakers, and power up again. If LEDs continue to flash, there is probably an internal problem with the amplifier that will require service attention to fix.
  • Sep 23, 2010 | Phoenix Gold ZX600ti Car Audio Amplifier

    2 Answers

    When you turn on the power it turns off right away. You can hear a click when you turn it on and then it clicks off.


    Unplug all of your speaker connections and try switching it on again.
    if it stays on, make sure you have the correct speakers in the correct terminals and make sure no strands from the speakers are touching any thing else.
    Also if you have changed any of the cables it could be a protection mode, you need to match the correct impedance wire to the original speaker cabling.
    Regards
    Mike

    May 27, 2010 | Onkyo TX-DS575 Receiver

    2 Answers

    Protection error in denon avr-3000


    Hi,

    Do you know what caused the protection shut down in the first place? Did you short your speaker wires even briefly?

    You could try to Unplug the Unit for Few Minutes, say 30 minutes and then turn it back ON.Usually that would fix the issue.

    If you are going into protect mode with no speaker attached,chances are that your output Ic is in need of replacement .This is the most likely cause of a protection error that you are experiencing.I am having a bit of difficulty in locating specific part numbers but feel confident that replacing outputs will remedy your concern.For further info and parts or authorized service locations in your area I suggest to contact mfg at www.usa.denon.com/ .Click on support or call(201)762-6500.I believe that they have a flat rate service and will give you an estimate.

    Still, on the remote possibility that it is just a glitch caused by momentary power interruption or fluctuation, try to re-initialize the microprocessor, a hard reset (not unless this is what you were referring to as rebooted). The reset should force the AVR-3300 to revert back to factory defaults removing glitches, errors in settings & configurations, memory & presets as well as user preferences.

    * turn OFF the unit using the POWER button;
    * press and hold both SPEAKER A and SPEAKER B;
    * without releasing the 2 buttons, press the POWER button;
    * release the 2 buttons only when the display starts to flash;
    * in the event of no display flashing, repeat the process.


    Should the above be not corrective, then it would be a hardware fault and not just a glitch.


    Let me know, if needed further assistance.

    Hoe i helped you.

    Thanks for using ' Fixya ' and have a nice day!!

    Jan 13, 2010 | Denon AVR-3300 Receiver

    1 Answer

    VSX-D608 Overload and shutdown


    Overload is displayed when the amp draw is excessive, and can be caused by different faults.
    when Overload is detected, the protection circuit will shut down the unit to prevent further damage.

    The first thing to try is hard reset. Shut down the unit for about one hour to drain power completely.
    This can fix minor problems that can cause overload, for example electrostatic charge accumulation on internal capacitors.

    If that does not fix the problem, then you must find the fault.

    Overload can be caused by shorted speakers, wrong impedance speakers, or by a contact on speakers wiring.
    Check speakers connection and test different speakers with 6, or better 8 Ohms impedance.

    Another test can be done by unplugging all speakers, and reconnecting and testing them one at a time, at a very low volume.
    No more than two 4 Ohms speakers can be connected to the unit, or you will get overload.

    If the speakers are OK, then preamp, shorted input/output connectors, main power supply or faulty output transistors can draw too much amps causing overloading.

    In that case it is recommendable contacting Pioneer at the number listed on the owners manual.

    Jun 22, 2009 | Pioneer VSX-D608 Receiver

    1 Answer

    Amp comes on and goes right into protection mode saw the decibel display briefly, received the "Protect" message on the display. can you pliz help me on how i can deactivate the protection....


    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.

    Apr 06, 2009 | Onkyo TX-DS787 Receiver

    1 Answer

    Samsug HT-SK5 fails with 'Protection' on display


    Protect mode will kick in whenever a fault is detected.

    You get the unit not powering up, and sometimes you hear a clicking noise, that is the protection switch that keeps shutting down the unit.

    Causes that can start protect mode are:

    Electrostatic harges on internal circuits.
    Leave the unit unplugged for power for one hour or so, this will allow discharge.

    Bad speaker wiring.
    Check speaker wiring, try unplugging and plugging back, or start after removing one speaker at the time.

    Internal fault.
    Internal fault is the natural cause for protect mode. If all the above did not work, then the problem is a blown component or an internal fault. In this case the unit must be taken apart , tested and repaired by an experienced person.
    If the unit is less than one year old, or if you want to get service, call Sony at the phone number listed on the product documentation.

    Regards.

    May 28, 2008 | Samsung HT-SK5 System

    Not finding what you are looking for?
    Audio Players & Recorders Logo

    107 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Onkyo Audio Players & Recorders Experts

     Grubhead
    Grubhead

    Level 3 Expert

    5056 Answers

    The Knight
    The Knight

    Level 3 Expert

    74106 Answers

    Electro Med Services...
    Electro Med Services...

    Level 3 Expert

    6694 Answers

    Are you an Onkyo Audio Player and Recorder Expert? Answer questions, earn points and help others

    Answer questions

    Manuals & User Guides

    Loading...