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ac power cord is staying lit red, although mac is 100% charged

My MacBook Pro is 100% charged, but the power cord is changes quickly from green when it is initially plugged in, to red. The system is about 4 years old, and I'm wondering if the power cord will need replacing soon. Thanks!

Posted on Nov 7, 2020 2:54 PM

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Question marked as Top-ranking reply

Posted on Nov 7, 2020 3:16 PM

PilarKline wrote:

My MacBook Pro is 100% charged, but the power cord is changes quickly from green when it is initially plugged in, to red. The system is about 4 years old, and I'm wondering if the power cord will need replacing soon. Thanks!



The magsafe cord/connector light is informed by the DC-in board and logic board.


You can try resetting the SMC https://support.apple.com/en-us/HT201295



Apple Portables: Troubleshooting MagSafe adapters

https://support.apple.com/en-us/HT203207



Knowing the exact Mac would be valuable information to share here...

1 reply
Question marked as Top-ranking reply

Nov 7, 2020 3:16 PM in response to PilarKline

PilarKline wrote:

My MacBook Pro is 100% charged, but the power cord is changes quickly from green when it is initially plugged in, to red. The system is about 4 years old, and I'm wondering if the power cord will need replacing soon. Thanks!



The magsafe cord/connector light is informed by the DC-in board and logic board.


You can try resetting the SMC https://support.apple.com/en-us/HT201295



Apple Portables: Troubleshooting MagSafe adapters

https://support.apple.com/en-us/HT203207



Knowing the exact Mac would be valuable information to share here...

ac power cord is staying lit red, although mac is 100% charged

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