I live, just about, under an electrical robot, so 50Hz hum is all over the place.
(If you think it is bad for guitars, I also tinker with radio...)
Anyhoo, my ST-1 is struggling to cope.
It seems to me the issue is the coils picking up the hum - if I position the guitar in free space so the hum is maximised, then turn it so the pick ups are at 90° to the original the hum dissipates. I think the coils are actually acting as a series of parallel arrays.
Cavities, bridge etc etc are shielded and continuous.
Thus, my question is regarding the shielding on the pick ups themselves. Are they shielded? It all looks pretty plasticky to me, but without breaking one open it is hard to tell.
Anyone have any idea if they are?