Chosen Solution
I recently bought this used MacBook pro, and initially it worked well. Then I started noticing that the fan randomly speeds up even though the MacBook is cool to the touch. So I used a software to manually set the fan speed and it showed me 0 RPM for the fan, and wouldn’t manually change the speed. I did multiple SMC resets but no change. After some time I started using development apps like Xcode and Android Studio, and the MagSafe charger stopped working. At first I would reconnect the plug or the connecter and it would start working. But now the charger doesn’t work for hours. I use the charger when the battery is around 20%, I plug in the charger and the connector and there is no green or orange light, nor is there any reaction on the MacBook. Then I took the same charger and connected it to my brother’s brand new MacBook (2015 Model) and the light turns on. But when I use it on my own afterwards, my MacBook doesn’t charge. Then I tried my brother’s MacBook charger on mine and that worked, my MacBook started charging. After about 2 minutes I used my charger and it started working as well. This has happened multiple times so far and I can’t figure out what the problem is. My charger even started working after I used it on a friends MacBook Air and then immediately on mine. That only happened once and I don’t know why. Is there anyway to figure out the actual problem? Should I get a new charger? Also I live in a country where it’s hard to find reliable persons for repairs or replacement equipment and hardware.
First unplug the charger from the wall and turn the Macbook off. Try to clean the MagSafe 2 contacts with a cotton swab and rubbing alcohol. Both the laptop and the charger sides should be cleaned. Hope this helps.
