HT3964 USB port not working even after resetting the SMC and PRAM, what can I do now?

Hi All,
I've got the "USB port draining too much energy" error message a couple of weeks ago and since then I've tried many times to reset the PRAM and SMC but still, one of my USB port is not working.
Could anyone please tell what I can do next ??
Thanks a lot

If you live near an apple store make an appointment.  They will perform a DFU restore using known good equipment.
If that doesn't work you probably have liquid damage.

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