Like I said before, I think it's much better to wait first before you open the bag. The warmer the gear is before you open it up, the less condensation. If time is short, however, maybe there is an argument for unpacking sooner and waiting as long as possible before powering up. Then the gear would warm up faster than if it was in its case, and hopefully the condensation would have dried up. Still, I think it's best to avoid condensation in the first place and wait as long as possible before unpacking. Even if the circuit boards are dry when you power up, having had water on them at all seems undesirable.
Also, never immediately unpack a frozen instrument, unless it's made of aluminum or plastic
See? I'm trying to use more Smileys![]()
Yes, you're quite right in principle, except for the reality that you cite. The bag would tend to insulate and often there isn't time to wait around. By opening the bag, you risk accumulating a very small amount of moisture on the PC boards but that moisture will evaporate very quickly unless you're gigging in a sauna. So, in short order, you'd bring the equipment to room temperature and have evaporated whatever formed. Again, I think this all making a mountain out of a molehill.
Nice to see you smiling.