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   sci.electronics.repair      Fixing electronic equipment      124,925 messages   

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   Message 123,848 of 124,925   
   root to Ronald   
   Re: lost one channel on an old Onkyo amp   
   19 Aug 23 16:10:14   
   
   From: NoEMail@home.org   
      
   Ronald  wrote:   
   > On Saturday, August 8, 2015 at 11:15:10???PM UTC-4, Shaun wrote:   
   >> "Tim R" wrote in message   
   >> news:425fdc8f-20ed-40b2...@googlegroups.com...   
   >> I have an old and extremely heavy Onkyo stereo amplifier that I use in the   
   >> basement in my workroom. I bought it years ago at a thrift shop and it's   
   >> worked well for years.   
   >>   
   >> Now only one channel works. I've tried it on A and B speakers and mono,   
   >> doesn't matter. Sound comes out of only one side.   
   >>   
   >> Is there anything simple this is likely to be, or is it time to set it out   
   >> by the curb? (in my neighborhood nothing makes it to garbage day)   
   >>   
   >> There was a thunderstorm and power outage this week, but I'm not sure if it   
   >> failed before or after.   
   >> I've fixed my 5 channel Onkyo amplifier years ago; It was just cracked   
   >> solder joints between the RCA connectors and the circuit board. I would   
   >> suspect in your case that you may have a failed transistor or two. You have   
   >> the other channel to compare the reading too. Remove the power transistors   
   >> (mounted on heat sinks) and check them with an DMM on diode check, then   
   >> compare them to the pair from the working side. It is probably worth the   
   >> effort since Onkyo has a good name for mid quality Hi-Fi equipment. Then   
   >> look on the internet for replacements or Substitutes and get a matched pair.   
   >>   
   >> Shaun   
   > Only a m5160 other than what I've wrote to the military why would a amp play   
   on both yet not just one both channels work just not at the same time   
   simultaneously.. bull shit   
      
      
   I've had two Onkyo receivers in the past. Strange things happened with them   
   such   
   as FM not working, one or the other channel would go out. In each case   
   I put the receiver on a shelf and bought another. The first time it happened   
   I had replaced the Onkyo with a newer Onkyo. After a while the new Onkyo   
   flaked out and I bought a Denon. Then for some reason I connected the   
   original Onkyo up and everything worked. After a while I tried the same   
   thing with the second Onkyo and it also worked. My conclusion is that   
   if you unplug the Onkyo and leave to so for several days it heals   
   itself.   
      
   YMMV   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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