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HT-R380 doesn't wake from standby

My Onkyo HT-R380 intermittently refuses to turn on from standby.The remote doesn't do it nor does hitting the power button on the front.The only thing that fixes it is to turn the power off and back on at the socket. Annoying but I can live with it BUT is this a sign of something failing?

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Posted on Jan 02, 2017

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SOURCE: Onkyo TX-DS777 Problem

man I think i have the same problem....
i push the power button but immediatly the LED turns off. I cheked the fuse but thats not the problem. Please if you solve your problem let me know...
my e.mail adress soy_robertog01@hotmail.com
sorry if you dont undersatnd me in some parts..im not very good writting english haha sorry..

Posted on Jul 29, 2008

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SOURCE: onkyo HT-R560 receiver

The unit most likely blew up a capacitor. If you look in through the slots on the top of the unit you should see 2 big black caps (C6901 and C6902) with shiny silver-ish tops. I should also point out that you probably flew up a 125v 8A (F901) glass fuse on the board that the AC cord plugs into. The glass fuse can be found at Radio Shack, but the caps are a bit more troublesome to find. They are 10,000uF 69v and thats just not a standard part, so you may need to up the voltage requirement and buy a 75v cap. Total to fix the amp yourself: Should be about $35 with shipping.

Posted on Nov 07, 2009

  • 1039 Answers

SOURCE: onkyo ht-r670 receiver is new and will not turn on

I would check any fuses first. The power transformer could also be open.There is a stanby supply that provides 5 volts that is always on . This is what supplys voltage for the standby light and the cpu. When you press the power button the cpu trips the power on relay that provides the 120v ac to the main transformer. If the transformer is open nothing happens. Onkyp part # is 2301798. Check the windings for continuity.

Posted on Jan 01, 2010

dunnbiker
  • 8546 Answers

SOURCE: i have an onkyo HT-R560

Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the
speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.

Posted on May 07, 2011

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Remote will no longer power on Onkyo HT-S3500. Once I turn it on manually, the rest of the functions work properly.


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Hello, I am sorry about your issue. I suggest that you contact us at 800-229-1687 option #3 so that we can troubleshoot with you. Thank you, Onkyo USA

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I have an Onkyo AV Receiver HT-R500 and when I turn it on, it turns on and in less than one second it turns back to standby. What could be wrong?.


Try disconnecting all the speakers and see if it does the same thing. If it doesn't, connect speakers again one at a time to find out which one of them is doing it. Make sure the speakers rating match the output of the amp.

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I have an onkyo HT-R560 receiver that won't turn on. the standby light light up and when you hit the power button you can hear a click-like sound but nothing happens. what should i do to fix my...


Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the
speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.

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I can't get the subwoofer off of standby mode. It's Onkyo HT_S5100. I have tried to alter the sensitivity level as described in the manual and it hasn't helped.


I have the same problem. I saw on another forum that you can plug the sub cable into the "tape out" and it works. It did work for me but now the volume control doesn't control the sub along with the other 5 speakers. Not sure what else to do...

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If you call Onkyo directly, 201-785-2600, there is a procedure to "reset" the system, something like holding the power button on and holding down another button for a few seconds. Can't remember which, so I can't be sure, but try giving them a call.

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