ihoryan Said:
"Macbook Pro A1989 thunderbolt problem: Hi everyone, I don't know which chat to ask if it's where to ask, but such a problem, I have macbook pro 2019, thunderbolt port 1 is only charged from the power bank, if I plug it in from the outlet, then it charges for a few seconds and turns off and so on in a circle. And if I want to connect a USB flash drive to this port, for example, he doesn't see it. Maybe someone has any assumptions? Interesting to hear, thank you!"
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Mac Charging:
Assuming you taking about a surge protector, then it seems you may have too good of one. So, downgrade to one of lesser wattage...
See if anything her helps...
Troubleshooting Mac Charge:
Refer to the following....
A. Reset the SMC and your NVRAM:
(Applies to Intel-Based Macs Only): Sometimes when changes are made to the system(i.e. Updates), system configurations (i.e. for Power) become manipulated, technically. So, reset the SMC and NVRAM. Try performing each thrice. It may take sometime, being certain you have the time to perform these resets.
B. Try a New Charger:
C. A Few Links to Refer to for Power: