My tu2 boss tuner has about a 5 second pause before it can start tuning. Doesnt matter how the pedal is powered, it always has this brief lag before it senses a note. Only upon hitting the footswitch from off to on. What part do you think can be causing this? I will add a schematic..can it be a power supply or footswitch issue?
https://i.postimg.cc/Dhxc0Sr0/Boss-TU-2-schem.gif
https://i.postimg.cc/Dhxc0Sr0/Boss-TU-2-schem.gif