From October 2009, till now, I have fixed (maybe some of it cannot be called real repair) my Macbook countless of times on my own. These includes replace the screen due to the cracked, changing/repalced my hard drive many times, replace and also upgrade memory RAM, and most of it are the Magsafe charger.
I am not sure why, but, my magsafe always have thermal dissipation problem and generate heat more than it should when in use. Magnetic connector that attached to the Macbook get warmer/hotter when I am charging for hours during the longer usage. Even, the magsafe converter (big white square thing) sometimes getting hot too.
|magnetic connector separated from supply cable due to excessive heat.|
|magnetic connector and pins separated from cable|
|by remove two lock pins, plastic that hold supply pins can be detached|
|supply pins plastic holder detached from magnetic connector.|
|circuit for magsafe dc supply|
|insert pin into plastic holder and solder it.|
|using clamper is easier to solder|
you can verify the charger by charging your mac
|repaired charger are verified and working.|
NOW, NEED TO REDO THE OUTER COSMETIC TO MAKE SURE ITS DOES NOT BROKE AGAIN.
|insert sumi tube|
|use plyer to tighting the connector cover into the magnetic|
|attach the sumi tube to the cover|
|heating up the sumi tube to shrink the rubber tube|
So, instead of throwing broken charger into the bins, I think, why not we try to fix it. If its work, we will save money and also saving the earth by recycling the product. Cheers