Will Cowell
From:
Cambridgeshire, UK
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Posted 28 Sep 2011 8:02 am |
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I just bought a Phonic mixer, model MM1705a. It's got a great spec, but no power supply. Phonic have discontinued the model, and apparently don't stock obsolete parts. So my problem now is how to power the little beggar.
The PSU is supposed to be model no. 353-21904,6,7 or 9. I don't know if it's just a transformer, or a switch-mode PSU. If I knew what voltages it produces, I can build a substitute but I'd prefer getting hold of a genuine PSU.
Can anyone help, please, with information or a PSU?
Thanks in anticipation!
_________________
Williams 700 series keyless U12,
Sierra keyless U14, Eezzee-Slide & BJS bars
Moth-eaten old Marshall 150 combo
Roland Cube 80XL, Peterson Strobo+HD,
EarthQuaker Despatch Master for reverb / delay |
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Will Cowell
From:
Cambridgeshire, UK
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Posted 29 Sep 2011 3:37 am
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Just an update here, I opened up the case last night and had a look at the internal electronics. It's pretty clear that the transformer is just that - it provides a centre-tapped AC voltage to the unit. My guess is 24-0-24 given the voltage regulators etc in use, and the capacitor voltages.
Can anyone confirm please, by putting an AC voltmeter on their plug where it goes into the back of the mixer? I'm 99% certain, but I'd prefer 100%.
Will Cowell
_________________
Williams 700 series keyless U12,
Sierra keyless U14, Eezzee-Slide & BJS bars
Moth-eaten old Marshall 150 combo
Roland Cube 80XL, Peterson Strobo+HD,
EarthQuaker Despatch Master for reverb / delay |
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