F-75 Coil Problems?

[CoilFisher]

Anyone have a new unit that when the wire feeding the coil was tapped hard or coil bumped hard it gave a tone/beep?

 

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[Bart@Big Boys Hobbies]

Hard?? Most machines will give some kind of response if bumped hard. Normal coil scrubbing shouldn't cause any response.

 

[CoilFisher]

Ty for that info.