Chosen Solution

Hi all, My Macbook Air no longer charges when connected to my Thunderbolt display. The led on the magsafe connector is blinking fast (green). Question: what could be the problem? Tried: cleaning the connectors / reset PRAM / reset SMC / disconnect power for long period (hours). All the best from Holland, Pieter

We don’t have a cord or power supply replacement guide. If the cord looks OK I would suspect the power supply is having problems. Here is the IFIXIT teardown which can help guide you Apple Thunderbolt Display Teardown and here’s a good guide which willl get you in Apple Thunderbolt Display EMI Filter Replacement