Hi John I presume you checked all of this points: http://www.macworld.co.uk/how-to/mac/fix-macbook-that-wont-charge-3599077/ And with all the repairs you already tried, last thing coming to my mind is the magSafe itself. Check not only for debris, but also check if the contact pins are clean on both the mac and the charger. http://osxdaily.com/2014/02/04/magsafe-wont-charge-mac-fix/ Good Luck Norbert