Question about Onkyo HT510 Receiver

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How can i deactivate ''protect mode'' on my Onkyo ht-r510 av receiv

My onkyo ht-r510 would not turn on. The three fuses i see on the insider are not blown. I removed all cables from the back, and tried to turn it on again. It came on briefly and then turned off, never to turn on again. From all that I read, it seems the dreaded protect mode was activated. I live in RI and there are no service centers near by. Is there a way to determine what specifically is involved in the ''circuitry'' that Onkyo says is avtivated to protect the system? The system was given to me and I am not going to pay to have it fixed. I would rather dump it and purchase a different make system that has a better service center network, than Onkyo.

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  • aohinds May 28, 2009

    Last night i did two things.

    1: I move the receiver to a different wall plug.

    2: I reseated the fuses.

    It came on briefly when powered up and then turn off, following by several "clicking" sounds similar to the one it makes when it is powered on.

    Subsquent power on/off resulted in this "clicking" but no display. I left it overnight and tried in the morning, and the same thing occurred.



    What i am i looking at? a blown transistor? are they the white ones near the heat sync?

  • adrian_hinds May 11, 2010

    I did remove the three fuses to have a better look. Is there a right/wrong way to put back in? i.e. is there a negative positive end? just checking to see if i made the issue any worst.

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SOURCE: Onkyo TX-SR500 5.1 Receiver Last night

1-disconnect subwoofer first and test-and then disconnect surround speakers-and front speaker after-and later center speaker.ever time you disconnect you check the operation until you find the bad one(or two)which make the problem change its cable first and then change speaker itself.if all above failed contact the service center.

Posted on Jul 04, 2008

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SOURCE: 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).

Posted on Apr 21, 2009

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1 Answer

My onkyo HT RC330 will not power up at all. Have had problems past couple of months with starting it but if you played around with swith it would start. Now nothing.


Try resetting the AV receiver To reset the AV receiver to its factory defaults, turn it on and, while holding down VCR/DVR, press 8 ON/STANDBY. "Clear" will appear on the display and the AV receiver will enter Standby mode.

It is possible that the protection circuitry has been activated. Remove the power cord from the wall.. Disconnect all speaker cables and input sources, and then leave the AV receiver with its power cord disconnected for 1 hour. After that, reconnect only the power cord and set the volume to maximum. If the AV receiver stays on, set then the volume to minimum, disconnect the power cord, and reconnect your speakers and input sources. If the AV receiver turns off when you set the volume to maximum, disconnect the power cord, and contact your dealer.

If the standby light is lit it and the unit will not boot it is most likely that the protection circuit has been activated. If there is no standby light then check the fuses. These units check that the power supplies are operating near specification. If a capacitor or resistor in the circuit, or a broken solder connection the unit will shut down. Because of the temperature the thermal cycling around the power supplies a broken solder joint can occur. This will make for an intermittent operation.

Hope this helps.
26289825-owoa52fq3dbvw0lom3ojbzgr-3-0.jpg Failed resistor or capacitor


26289825-owoa52fq3dbvw0lom3ojbzgr-3-2.jpg

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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.
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Hey there..Sorry.When the amps are over powered they blow the main circuit and short causing the amp to turn on the right back off to protect mode.That you will have to send in to get fix..Look behind the amp and see if theres any wires touching or grounding out.My favorite amps are from onkyo and believe me i've done this a few times to 5 aps I've had.So I up graded to the tx sr 906 It rocks and will blow every speaker I have before the amp will go..Hope this helps you and good luck..Have a great day...

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