When I place my LPB-1 in my signal chain, there is a MASSIVELY LOUD buzz coming from my amp. Doesn’t matter if the pedal is on, off, on AC power, or on batter power—just by being in the chain, all I get is a massive, loud buzz. There’s zero signal from my guitar.
The pedal suffered no abuse, and the inside of the pedal looks fine (though, admittedly, I know nothing of pedal electronics!).
