What should I do if my charger overheats?
My macbook charger gets so hot at the junction where the skinny wire connects to the white box that I thought it had burned me! I'm very nervous to use it and I don't know what to do.
MacBook
You may need to consider a replacement MagSafe adapter
but should see about getting an inspection or diagnostic check
of the computer at an Apple Store; if one nearby or in driving
range has a Genius bar, call ahead to set an appointment.
The basic information on troubleshooting (article) does not
appear to dive deep into the hot wire issue; I've heard of it.
•Apple Portables: Troubleshooting MagSafe Adapters
http://support.apple.com/kb/ts1713
•Reducing cable strain on MacSafe Adapter:
http://support.apple.com/kb/HT1630
Since the MagSafe Board (a DC-in Board) in the MacBook
may have something to do with extra resistance and heat
generation in the wire going between the Mac & Charger,
that may be something a tech could inspect.
Also, if there is any debris in or on the MagSafe contacts
that are in the MacBook or the plug/wire connection, be
sure to carefully remove that which may pose a weak or
incomplete connection of these, that may increase heat
due to poor connections.
An inspection of the computer, ac adapter, battery, and
test/diagnostic of charging system, may help determine
any unseen causes of a pending failure in them.
Hopefully you can get an expert to look into it.
Good luck! 😐