Question about Lexicon MC-1 Amplifier

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MC1 Switched Power Supply

The power supply failed because overheating.
The large capaciter was broken, I changed but no success.
Please inform me about the voltage between blue, black, red
and orange wiring.

Thanks!
Hans-Joachim Meyer, me-ing@t-online.de

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  • Anonymous Jan 29, 2009

    I also have an MC-1 with a dead power supply. The outputs are:

    Blue: -15V
    Black: 0V
    Red: +5V
    Orange +15V

  • Kevin Z
    Kevin Z Feb 25, 2014

    You can buy a whole new power supply from Mouser. It is super easy to swap out - just a handful of philips screws and two plug connections. Emerson NFS40-7610J or equivalent.

  • Kevin Z
    Kevin Z Feb 25, 2014

    about $55

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  • 1,512 Answers

Hi Hansjo. You may find that if one capacitor has failed, then there may be more. If you see any signs of bulging, leaking, or pushing the bottom out of any caps, then It is a good idea to just change them all. For the small expense, it is worthwhile knowing that your power supply has fresh caps. Try the amp and then see how it goes. If you still have problems, get back to me here and we can talk about it more.

regards
Graeme

Posted on Feb 29, 2008

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