got a ? about a pedal delaying

[LightSoundGeometry]

I have a pre amp booster that works great, but the very first item I kick it on after a fair amount of time  whilst not in use ( turned off idle for at least 2 hours) while delay for a second before it engages , then its fine..until it rests and performs no work for a stretch of unmeasured time.

[armdnrdy]

Is this something you built?

Link a schematic

[Mark Hammer]

It's a result of the storage/smoothing cap on the power line taking a moment to charge up fully.

It is also the very same reason why, when somebody asks whether it's a good idea to use a 3PDT to bypass AND turn the battery off at the same time (to extend battery lifespan) we collectively say "NO".

[LightSoundGeometry]

right on mark!