I second the comments on bearings or magnets. I would think that bearing would be
progressively louder whereas a magnet fail would be all of a sudden. Personally
I’ve been using ETs since 1980 and have never experienced a brush failure
or ones that were completely worn out.
Take care,
Dean
On Dec 1, 2021, at 10:20 PM, David Tiefenbrunn <davidtief comcast net>
wrote:
replacement.
Dave
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