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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: Pure Power Ground LoopPosted by drdna on: 11/8/2020
 N-set wrote:
They have figured out a way to eliminate this but it requires making a new PCB to replace one in the PP2000. So they say they are going to make these and hopefully the replacement PCB will be given to me in a month." 

As some here may recall, after my PurePower failed catastrophically, I sent it back to Damian for repair. Eventually, after a long while, they admitted they had possibly sold my unit and offered a replacement. After another very long while, it arrived. The new unit no longer had the same buzzing problem. There was some noise, but this resolved with properly positioning the unit away from the phonograph.
I still contend any noise (when adding Pure Power), based on the experience of myself and others, might be coming from a component in the PurePower unit that is experiencing intermittent failure, possibly mechanically loose, cold-soldered, under-rated for its voltage/current requirements -- who knows -- but especially when it is an intermittent noise rather than a steady hum, it is something that should be checked out before you experience total failure of the unit. 
Adrian

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