BrianG : Maybe it's just too much circuit in too small a space. Switching BECs are quite efficient (around 85% depending on load), but there is still some heat there. Maybe the ICs being used don't like any kind of heat nearby, especially since the FETs are right above it creating more heat. Or, maybe there is some inductive noise coming from the coil that is inducing a voltage in a really sensitive area.
never would have thought of that, but you know this makes alot of sense. coils, transformers, energized parts, etc.... do indeed create magnetic fields that can and WILL induce voltage onto most conductive material. do you really think it could just be a case of oh $#!* duh!why didnt we see that? like i have said before im no electronics specialist or engineer of any kind, but i do vork with high voltage. induction is real and can kill you, but at this scale all the same principals apply.
i say they give BrianG o job if he figures it out!!