03-03-2011, 08:37 PM

Hi all.
I have a late 2009 Macbook White.
I recently used an USB hub that (i think) it was faulty.
My Macbook shut down without any warning... poof.
Restarted fine but my 2 USB ports stopped working.
I tried all this:
- Used Apple Hardware Test. (no errors, all good).
- Left it 30 minutes without power cord.
- Booting Windows XP on bootcamp.
- Boot with 10.6.1 disc to see if an external USB keyboard would work.
- Boot in safe mode.
- Create new Admin User.
- Press and hold power button until led blinks on startup.
- Resetting SMC.
- Resetting PRAM and NVRAM.


There was another thing to do: remove battery. Can`t do that because I don`t have the necessary screw driver (triangle thingie). Any extra help?
Thanks in advance.

03-04-2011, 08:56 AM

The USB shows in the System Profiler.

USB High-Speed Bus:

Host Controller Location: Built-in USB
Host Controller Driver: AppleUSBEHCI
PCI Device ID: 0x0aa9
PCI Revision ID: 0x00b1
PCI Vendor ID: 0x10de
Bus Number: 0x26

Can it be "fried" and still show up?
Thanks.

03-04-2011, 09:32 AM

There are minimally two things that are part of the USB system. There is the Host Controller Interface (HCI) that is on the Logic Board of the Mac..the AppleUSBEHCI listed in the System Profiler above..the second part is the physical connector that accepts the USB devices and interfaces to the HCI for communication.

A faulty USB device can damage this USB port such that the HCI cannot communicate with the devices, however the processor can communicate with the HCI.

If both the USB ports were damaged due to the hub then you might be totally out of luck and your only recourse would be to get a replacement logicboard to get this fixed..

Regards

03-04-2011, 02:43 PM

Raz0rEdge is correct about the way the ports work and communication between the controller. Unfortunately, I've seen this too often with USB hubs that are poorly designed and cause a current overload which damages the ports. Take it in on in to Apple and get an estimate for repairs. If your machine is covered under Apple Care, they may decide to repair it for free.