I have a Planet Waves Pedal tuner. It is true bypass so it it working by a switch. Does this mean that the battery is only being used while the pedal is on or all of the time? Sometimes I leave a cable plugged in and wasn't sure if this drains the battery on this pedal. I know it does on BOSS pedals.
just give it to me and buy a new tuner
Yea, I think it will drain the battery if you leave the cable in, it happens on all pedals.