The USB-C port on your MacBook is not working: it does not charge when you plug the charger into that side, a drive or display is not recognised, or the plug is loose and keeps falling out. Because many MacBooks do everything through USB-C, that is annoying. This article explains how to find out whether the port, the cable or the device is to blame, how to clean a port safely and when it needs repairing.
Blue Apple repairs MacBook ports in Amsterdam. Start with the steps below.
Step 1: the port, the cable or the device?
- Try the same cable and device in another port. If it works there, the first port is to blame.
- Try another cable. Many problems come from a charge-only cable, or a cable that is broken.
- Try another device in the same port.
Also read Thunderbolt and USB-C explained.
Step 2: restart and reset
Restart your MacBook. On an Intel MacBook an SMC reset may help with charging problems through one port; see resetting the SMC. On a Mac with an Apple chip: shut it down, wait half a minute and turn it on again.
Step 3: check System Information
Open System Information (Option-click the Apple menu) and look under USB or Thunderbolt/USB4. Connect the device and click File, Refresh Information. If it does not appear, the Mac does not see it through that port.
Step 4: dirt in the port
Lint from your bag or pocket easily builds up in a USB-C port. Then the plug does not go all the way in and makes poor contact. Look into the port with a torch.
- Shut the MacBook down.
- Carefully remove dirt with a wooden toothpick or a plastic stick. Never use anything metal.
- Then blow with compressed air in short bursts.
- Mind the small tongue in the middle of the port: it can bend or break.
Step 5: charging through one side only
If the MacBook only charges through one side, the other port or the charging circuit behind it is often faulty. Meanwhile charge through the working port or via MagSafe. See MacBook says "Not charging" and charger or cable broken.
Signs the port is broken
- The plug is loose or wobbles, even with another cable.
- The tongue in the port is bent or broken.
- There has been moisture in it; you see green or white residue.
- The port only works if you hold the plug at a certain angle.
- The MacBook says a USB device is drawing too much power, even with a device that works elsewhere.
How is a USB-C port repaired?
Depending on the model the port sits on a separate small board or directly on the logic board. On a separate board, that part is replaced. On the logic board, the port is desoldered and a new one fitted, or the circuit behind it is repaired. See component repair explained.
What we do at Blue Apple in Amsterdam
We clean the port, measure whether power and data pass through it, and replace the port or the part behind it if needed. You hear beforehand what it costs. More on our page about MacBook charging port repair.
Frequently asked questions
Can I use my MacBook with one broken port?
Yes, if the other ports work. Do have it checked if moisture or a short circuit is involved.
Can a cheap cable damage my port?
A bad cable or charger can cause problems. Use cables and chargers from reliable brands.
Why does the plug keep falling out?
Often because of lint in the port. If it is clean and still loose, the springs in the port are worn.
