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Laptop USB Port Repaired

By on July 8, 2014
laptop usb port repair









The laptop of this story is an IBM ThinkPad Model No.:R40 Type 2722. The complaint was one of the USB ports was loose and therefore a false-contact with any USB device connected was always present.

laptop usb port repair

The device was disassembled step by step (note that disassemble a laptop is a process very tedious and delicate).

Finally I got the USB port.

laptop usb port repairslaptop usb port repairing

The four contacts of the USB port were re-soldered and the external metal case as well.

laptop usb port repairings

Note: the other USB port of this laptop was re-soldered to in the PCB (4 points).

When the laptop was fully assembled and turned on, I connected to the USB ports my SAMSUNG Digital Camera and a LEXAR Pen Drive, and look what happened then.


Wow! The USB ports worked perfectly. Mission accomplished













This article was prepared for you by Humberto Rodriguez, one of our ‘Master Authors’ from Cuba.


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  1. yogesh panchal

    July 8, 2014 at 2:52 pm


    Nice job thanks for sharing.

    • Humberto

      July 8, 2014 at 6:27 pm

      Thanks yogesh

  2. Waleed Rishmawi

    July 8, 2014 at 4:12 pm

    good job. well done again. have a good day

    • Humberto

      July 8, 2014 at 6:28 pm

      Thanks Waleed.

  3. Robert

    July 9, 2014 at 1:29 am

    Thanks Humberto, good job.

    • Humberto

      July 10, 2014 at 1:34 am

      Ok Robert, be welcome.

  4. Gopal Sharma

    July 10, 2014 at 10:27 am

    Thanks, but i have a question, in some pcs i have found that some usb ports are not recognizing even the OS is ok. Is this a chip problem or socket problem or my be dry solder as in your case. Please help.

    • Humberto

      July 10, 2014 at 6:42 pm

      Well Gopal, there could be some reasons:
      * dry solders as in this case.
      * remember the USB port depends on the South Bridge (chipset) and its Microcontroller as well.
      * no driver of USB ports installed in your Operating System.
      * etc.

      Have a good day, Humberto.

  5. reza

    September 22, 2015 at 8:10 pm

    hi dear Humberto
    thank u for sharing this article.


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