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Sony Mini Hi-Fi Component System (MHC-RG660)

I have a Sony Mini Hi-Fi Component System (MHC-RG660) which has developed a fault. It will suddenly switch itself off and the power button flashes. I then unplug the system and switch it back on but it immediately switches itself off again with the power button flashing. I have done the checks suggested in the troubleshooting manual and it is none of the those.
What could be the problem?

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  • 3 more comments 
  • Anonymous Oct 19, 2008


  • Anonymous Dec 01, 2008

    I'm having the same problem expect now unplugging it and plugging it back in does not work anymore. It won't turn on at all.

  • Anonymous Feb 24, 2009

    my sony hi-fi component system won't shut off. I've tryed unplugging it and plugging it back in but it just turns on and I'm still unable to shut it off. help...

  • Anonymous Mar 21, 2014

    i have a sony Mini Hi-Fi System MHC-RV333DA if i turn on the dvd player reads but all the press buttons not working pls. help!

  • Anonymous Mar 28, 2014

    I have sony mini hi fi component mhc-gzr999d sometimes if i switch on my unit and put it on high volume well not so high volume upto 11 but when i do so my unit just went off and the power button is blinking what is wrong with my unit because every time i used it i cant raise the volume to my desire pls help me with this prob and one thing no any
    msg i see on the display just the blingking power button and the unit is off and i cant switch on without unplugging



1 Answer

I understand the problem. It should be the relay which is not responding, technically not able to connect the system power supply, you will have to replace the relay. The STK chip should be working fine.

Posted on Oct 24, 2008


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