earthquake powerhouse phd2 problem

7 years 9 months ago #1 by bestro2
i have a phd-2 amp when i hook it up to power n to my subs it makes a hummying noise to my subs and when i unhook the rca jacks it still be humming wth cause this problem
7 years 9 months ago #2 by amcinstaller
shit ground or a blowed up amp would be my first thoughts
7 years 9 months ago #3 by Tezzating
Bad earth maybe, bad IC or burnt zenner diodes on the output side more likely. Is it a loud humming, and does it play music ? If not, then most certainly the output FET's, zenners, driver IC and processor IC need replacing.

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