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I have an Onkyo HT-R560 that suddenly started turning itself off after a few minutes. I did some basic troubleshooting checking wiring and moving to a more ventilated location, but to no avail. After several tries of turning it back on and it turning off in shorter intervals, now it will not turn on at all. This unit is less than 2 years old and does not see heavy use. Typcially only used for football game and movie surround. Onkyo technical assistance was less than helpful. I can perform more specific troubleshooting and possibly repair with a little instruction. Can someone provide some guidance and/or point me to a location where I can download a service manual for this unit?

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Home theatre sets are quite tricky to deal with because of the sensitive components which they are made up of. Initially when the unit kept on turning itself off it was as a result of one of two things (Either a high voltage or a low one) But with the eventual outcome of not coming back on i suspect it is as a result of a higher voltage.
These units come with an inbuilt circuit breaker which ensures that instaed of the main unit to get fried just a fuse inside the unit gets fried. This fuse is burnt hence the refusal to come on.
simply open the unit try to locate the exact location of the burnt fuse and replace it. But be warned that if you dont have the technicak know how around the device refer it to an expert as you might further damage other components. You can get manuals from the following
http://www.retrevo.com/support/Onkyo-HT-S5100-Home-Theater-Systems-manual/id/18378dj389/t/2/
http://www.zarekmanuals.com/htr560-p-310244.html

Feel free to request any additional feedback.
Hope this solution has been helpful to you?

Posted on Sep 08, 2010

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