So I was hoping that replacing all magnet coils and magnet board would fix the issues with the hammer coil, but the new board makes a high pitched screeching sound. This occurs when the magnet is in detect mode. When in holding or grabbing mode the magnet makes a vibrating sound. I'm less concerned about the vibrating sound as that could perhaps just be an issue with not tightening firm enough (replacing that magnet coil was a bit of a pain). However, that high pitch certainly can't be normal. Unfortunately, I've yet to see the hammer magnet working properly on my Metallica Premium.
As (what I believe to be) a side note, while doing the disassembly of the hammer magnet, I broke off the piece indicated by the arrow. It broke off at the threads. I didn't see it labeled on the diagram, but my understanding is that this is a stabilizing bar that prevents the magnet and heat sink from rotating. I will eventually replace, but figure I should post just in case it has something to do with the issue. I don't think it does.
Not mine...
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Mine...
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