Question about Onkyo TX-SR605 Home Theater Receiver 7.1 Channels

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I have the same problem

I have it hooked up to new polk 8 ohm speakers, with a self powered sub. If I go over 50 on the vol dial it will run for aprox 10-15 min, then turns its self off. I let it set for less than a min and I turn it back on and it works fine for another 10 min or so. If I turn the vol down to under 35 or so..OR listen to a movie that has NO loud explosions, or does not have this problem. I have had this thing for about a year and a half now..and it never did it before.
I it on a new open shelf system. It WAS enclosed it has plenty of room all around it, and now it starts to over heat. I could have understood it before..??
I put a table fan behind it last night and set it on low, and it SEEMS to fix the problem. I dont know if I have a fan that died in the machine its self, or what the problem is? any ideas?
Thanks in advance.

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  • shooter313 Sep 09, 2009

    I use 10 gauge wire for all my speakers except for my Sub, that I use 8 gauge. I am running about 25 feet for my back speakers, 8 feet each for the fronts, and maybe 8 or 10 feet for the powered sub.
    T here is no dust in the reciever, I build computers..I used to do it for a living, now it is just a hobby of mine. (My newest one is liquid cooled.) :)
    I am aware of the problems dust buildup can cause and I am very careful not to let it happen. I clean all of my equipment weekly with compressed air, as you mentioned. (I take the covers off first of course.)
    It is not a Sony, I have not heard of any problems with those, mine is an Onkyo, (same as the person posting before me.) Heat has always been a problem for that company, from what I have seen in the past from my own Onkyo machines.
    From what I have read on line this is a pretty common problem, (some getting so hot people are starting to worry if they will start a fire.)I dont think they will get that hot, but I am not going to take any chances.
    I dont know WHY I bought it? I said I would never own anything made by them ever again. This time I will stick to that promise.
    I just ordered a new Pioneer VSX-23TXH. From what I have read heat is not a problem with these machines especially the Elite series.
    Thank you for your advice. :)
    Have a good day.

  • shooter313 May 11, 2010

    It was NOT by using the persons information that posted to my problem.

    I solved it myself, so WHY would I want to help YOU SELL my soulition to some other person with the same problem? If you want to know how I did it, check the AV boards I posted the fix on. I dont believe in charging people for advice, especially when I am not actually LOOKING at the piece of equipment they have. Especially when that person answering my post didnt even mention the correct manufactuer I had listed!!

    Plus I dont think most people should be taking apart electroinic products, most will end up doing more harm than good, and in the end turning a $50 fix into a new machine instead. Which I did buy as well..but I fixed the Onkyo just to prove to myself that I could do it.

    Pretty sorry site to lure people in with a WE WILL HELP YOU AD, then pull the bait and switch and try to charge them for someones opinion that MAY have a clue what they are talking about instead.

    Pretty sorry site pal.



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No mention of speaker wire size or length but the internal thermal shut down circuit is very sensitive, if even one channel goes into thermal protection it shuts the unit down, quick fix is cans of compressed air for computers and clean the inside of dust the factory set thermal cut off is 39.1 to 43 degrees celcius with an impedence check of not less than 4 ohms, your fan trick sounds like the right start the volume setting is not absolute there fore it may be your units actual voltage, amperage wattage conversion output is at its limit, heat is electronic death take great care to avoid heat, large amps have massive heat sinks your sony is not one of them

Posted on Sep 09, 2009


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