Another S1-45 problem.

THE NEW #1. Series One Amplifiers.
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OzStrat
Posts: 30
Joined: Thu May 27, 2010 12:00 am
Location: Brisbane, Australia
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Thu Oct 04, 2012 4:27 am

As soon as I move the DPR knob away from the minimum power setting, it invokes a full volume continuous burst of hum loud enough to rattle out fillings, regardless of the volume setting. Yet all works well at 4.5 watts.
Something has gone wrong with the DPR circuit.
Has anyone else experienced this, and was it an easy solution?

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