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Does not power on with USB-C Dock.

Hey guys the battery of my Macbook Retina 2017 is defect and won't charge anymore. I usually only use it connected to the power supply so it didn't matter to me much.

But now I bought myself a HDMI USB-C Dock with a 60W Power Delivery Port, but the MacBook won't turn on when I plug in the dock in between the only Thunderbolt Port the device has and the power supply.

The Dock works fine and charges when I plug it into my iPad Pro so the PD function is working. I also bought a 90W USB-C power supply which acts the same (works when plugged in directly but not when the dock is in between.

And I also bought a second dock, but the problem remains, it is like the MacBook does not allow to use the dock when the battery is defective ... any advice?

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Is this an Apple certified dock? Some are USB-C only not Thunderbolt which is what you need here.

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You are right, it is just an USB-C Dock, but I haven't had problems with my iPad with that one. Is this a specific requirement for that MacBook? Since I know of many friends that also use cheaper USB-C Dock for their MacBooks Pro. But it wasn't one from the original apple store, one I tried was from Am*zon the other one from a retail store.

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Apple didn’t offer Thunderbolt functionality in the first USB-C connectorised iPads. So that explains different reaction.

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Since my iPad is a iPad Pro, 11" (3. Generation) it is equipped with a Thunderbolt 3 Port, so it must be something else.

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@marcogotthardt - Then the USB-C port of your MacBook is damaged. As you also stated it was having issues with power connections. Here’s the guide to replace it Retina MacBook 2017 USB-C Port Replacement

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Ok, thanks for your help, I didn't knew that a port can be so strangly defective. I would have guessed either it works or it doesn't, since the pins at A4+A9 aswell as B4+B9 work properly.

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