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Feedback Pedalboard Problem

My Pedalboard is powered by a 10 outlet powerstrip and individual adapters. All my pedals are are standard 9v boss powered pedals except for an EHX Polyphase. Recently, when I turn the Polyphase on it will either make a very loud pop noise or go into feedback. Is it possible the pedal may be bad? or could it be the fact that it is 24V?
 
As long as you are using the correct wall wart for the Polyphase, the 24V it uses will not have anything to do with it malfunctioning. I'd bet there is either a solder joint or a small component that has "gone bad". These types of things are a bear to diagnose, so I'd actually suggest just sending it to EHX for repair.
 
For the first 2 weeks I had it, the setup work fine. I have only been using the 24v power supply that came with it; so it must be the pedal. I will try the polyphase by itself today and see if it still does this.

Most likely, I will just have to send it back. Thanks for the 24v clarification though.