Schematics used to be included in user manuals for all consumer electronics. Anyone capable of recreating an electronic device from schematics can easily rever

Schematics used to be included in user manuals for all consumer electronics. Anyone capable of recreating an electronic device from schematics can easily reverse engineer such device from the board. They are not secret. Reverse engineering them is a little time consuming, but it's not hard. Circuit board design follows established conventions. I can fix boards without schematics.