Is this what you would expect?
Have a Discovery 420 treadmill. On the upper PC board,
8 of the 9 ICs have the identification info removed; it
appears that the area which previously contained the ID
on each chip, had been irregularly abraded with a small
tool (such as a Dremel).
Seems time consuming for the board manufacturer to do
this on each board.
Why would a manufacturer do this?
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