Hello. Thanks for taking the time to share this. You did an awesome presentation! I own an Amazon echo that looks like the power /speaker driver circuit board is bad. It got very wet. I cleaned all the corrosion off but evidently the damage is done. It powers up but no sound. Do you happen to have the part # for that board? I really hate to discard it because of this simple fix ya know? Thanks. Dennis , dgmenace at g mail