My MagSafe adapter stopped working 10 days ago, so I bought a replacement wire and replaced the original with this third-party wire. It worked fine until this morning.
It magically stopped charging!
So, I used one of those testers for current (This might've been a mistake) to check whether the charger was actually sending current or not.
On touching the tester to the L-Shaped head, it sparked and then there was no current!
I didn't connect it back to the MacBook since I'm afraid it might burn the socket or something which would ultimately cost me to change the entire Motherboard I believe as they are fitted into the PCB. (I'm not very educated on this stuff)
Should I try connecting it back to the MacBook?
Should I buy the original adapter from Apple?
This is what I mean by L-Shaped(60W):
This is the tester I'm talking about:
Best Answer
That tester you show is not for testing the output from the magsafe - my first concern is that with the size of its blade it is all too easy to connect two of the small terminals together - and from your description of "it sparked" then that may be what has happened.
I would not connect that power supply again to the mac, but I would replace it with a new one.
Or, if you have a friend with a known good power supply test your mac with that and if all is fine then buy a new one.