boss DD3 help

[yerblues]

I don't know if this is where to post this. I have a boss dd3 pedal that works with a battery, but not with a wall wart. The LED comes on but it hums loudly. I would like to fix this because this pedal eats batteries fast.
Thanks in advance for any help.

[Fret Wire]

Are you positive the wallwart is ok? Usually, humming with no other sound means your polarity is reversed on the adapter plug.

[Paul Perry (Frostwave)]

Maybe your wart can't supply enough current, some of these Boss Digital fx are real hogs.
It is supposed to have a PSA-120 adaptor, don't know what these are rated at.. anyone?