User profile for user: tonyakay13
tonyakay13 Author
User level: Level 1
10 points

Magsafe cord flashing red

Hi. New MacBook Pro and using the MagSafe cord to charge. Today while using, the computer did a little screen flicker, stopped charging and the cord itself started flashing an orange/red.


I tested the base and it charges the laptop fine using the thunderbolt cord, but when I connect the MagSafe - just red flashing.


I read in the forums from 2006 someone corrected this issue by resetting the PMU. However, there is no documentation on how to reset the PMU on a new laptop.


Has anyone had this issue? What was your fix?

MacBook Pro 16″, macOS 15.4

Posted on Jul 9, 2025 6:36 PM

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User profile for user: neuroanatomist
neuroanatomist
User level: Level 9
58,057 points

Posted on Jul 9, 2025 6:47 PM

If the indicator light flashes

If your battery is charging or charging is on hold, the indicator light glows amber. If the indicator light on the MagSafe 3 connector flashes amber repeatedly, try these steps:

  1. Disconnect the USB-C to MagSafe 3 Cable from your Mac and from the power adapter.
  2. Disconnect the USB-C power adapter from the wall outlet.
  3. Use a dry cloth to wipe the MagSafe 3 port and MagSafe 3 connector. Make sure both the port and connector are dry and clear of any debris.
  4. Make sure the USB-C port on the power adapter and the USB-C connector are clear of any debris.
  5. Restart your Mac.
  6. Connect the USB-C power adapter to the wall outlet, connect the USB-C to MagSafe 3 Cable to the power adapter and to your Mac, then try charging again.

If the indicator light continues to flash repeatedly, contact Apple.


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User profile for user: neuroanatomist
neuroanatomist
User level: Level 9
58,057 points

Jul 9, 2025 6:47 PM in response to tonyakay13

If the indicator light flashes

If your battery is charging or charging is on hold, the indicator light glows amber. If the indicator light on the MagSafe 3 connector flashes amber repeatedly, try these steps:

  1. Disconnect the USB-C to MagSafe 3 Cable from your Mac and from the power adapter.
  2. Disconnect the USB-C power adapter from the wall outlet.
  3. Use a dry cloth to wipe the MagSafe 3 port and MagSafe 3 connector. Make sure both the port and connector are dry and clear of any debris.
  4. Make sure the USB-C port on the power adapter and the USB-C connector are clear of any debris.
  5. Restart your Mac.
  6. Connect the USB-C power adapter to the wall outlet, connect the USB-C to MagSafe 3 Cable to the power adapter and to your Mac, then try charging again.

If the indicator light continues to flash repeatedly, contact Apple.


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Magsafe cord flashing red

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