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Audio amplifier Onkyo Integra M5060R

May 28, 2012

To continue previous post with audio amplifier in this one I will took apart second amplifier Onkyo Integra M5060R. It is amplfier from late 1980′ with output power of 2x225W RMS. Front panel is 2cm thick peace of glass and total weight of amp exceedes 18kg. This amplifier I got for free many years ago and previous owner told me that it’s working without any problems.

Moment I came back home and turned it on ……… nothing happened. I took it apart and saw some burned parts inside. But the worse part was that the PCB overall looked like it was exposed to the rain with many dark dots on it.

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Amplifier has 2 massive transformers on each side for each chanell. In middle there are 4 big capacitors with value 18.000uF each but unknown voltage.

I spoted one smaller capacitor that is leaking behind the big ones and some resistors on front panel. When I turned it over I spotted that sombody was allready messing around with ith since it has some very bad solder joints and the Power amps are different.

Here are some pictures of above mentioned amplifier from inside:

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9 Comments
  1. LEECH666 permalink

    So did you manage to fix that amp? πŸ™‚

    • No since just in parts it gets up to 200€ minimum, problem is that sombody else before me was messing around with it. There are clear proofs of hand made solder joints that are very bad, some additional wireing according to the original manual. Beside that whole one channel is not working as far as I tested transformer went “poof” πŸ™‚

      To sum all up, it is cheaper to buy used but in good condition one for that kind of money :/

  2. Hehe it wasnt your fault but mine, I forgot to turn off comment function that allows comments to be posted without my approval, hope it works fine now.

    Thank you again for your help, and I did find the manual you have posted me, indeed it is a great page, it will be defenitly bookmarked.

    Elvis

  3. LEECH666 permalink

    Okay looks like my last reply got lost somewhere in the voids of the internet.

    No I don’t come from Slovenia, I am from Germany.

    I agree that the ElektroTanya page is a little weird, but also very helpful when you search for service manuals. It has helped me out with my audio amps quite a few times, but everytime I revisit that page I have to learn again how to download from it. πŸ™‚

    There is also www DOT eserviceinfo DOT com which has quite a lot of service manuals too, but in case of your Onkyo it didn’t return and results.

    Cheers,
    Florian

  4. LEECH666 permalink

    Okay looks like my last reply got lost somewhere in the voids of the internet.

    No I don’t come from Slovenia, I am from Germany.

    I agree that the ElektroTanya page is a little weird, but also very helpful when you search for service manuals. It has helped me out with my audio amps quite a few times, but everytime I revisit that page I have to learn again how to download from it. πŸ™‚

    There is also http://www.eserviceinfo.com which has quite a lot of service manuals too, but in case of your Onkyo it didn’t return and results.

    Cheers,
    Florian

  5. Thank you for your comment Florian, now that I figured out how to download it properly I will have a look at what components are for replacing with original parts.

    Bt hope you dont mind for my question, are you from Slovenia maybe?

    Elvis

    • LEECH666 permalink

      Nope, I come from Germany, and yeah that page is a little weird, but has helped me quite a few times whenever I was searching for service manuals. Every time I go back to that page I have to learn again how to start the download. πŸ™‚

      There is also http://www.eserviceinfo.com/ which has quite a lot of manuals too. It’s not as hard to use as the other one, but in this case it didn’t return any results to my search request.

      Cheers,
      Florian

    • LEECH666 permalink

      Okay looks like my last reply got lost somewhere in the voids of the internet.

      No I don’t come from Slovenia, I am from Germany.

      I agree that the ElektroTanya page is a little weird, but also very helpful when you search for service manuals. It has helped me out with my audio amps quite a few times, but everytime I revisit that page I have to learn again how to download from it. πŸ™‚

      There is also http://www.eserviceinfo.com/ which has quite a lot of service manuals too, but in case of your Onkyo it didn’t return and results.

      Cheers,
      Florian

      PS: You can delete the test reply I just created.

  6. LEECH666 permalink

    That’s a very nice amp and it’s well worth fixing it. Especially if you got it for free. πŸ™‚

    You can find a service manual here: http://elektrotanya.com/onkyo_m-5060r_sm.pdf/download.html

    Make sure you don’t use an adblocker, or else the download of the manual might not start.

    Florian

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