Adding internal wifi to an IBM T20
Do the upgrade at your own risk. I accept no responsibility for a botched upgrade.
I describe putting an internal antenna in a laptop that has a MiniPCI slot but no wifi antenna. I use some empty space in one of the hinges. It would be better if the antenna was not horizontal and if it didn't move with the screen opening and closing but unfortunately I have to deal with both of these.
Please let me know if you have suggestions to make things go more smoothly or work better. bmidgley@xmission.com.
- Start with the antenna from MrTechUS (unfortunately now defunct). Cover it in shrinkwrap and shrink it.
- Unplug the laptop and remove its battery.
- Remove the MiniPCI door and take out any existing card and cable harness.
- Remove two screws that have a pair of triangles by them--this releases the keyboard.
- Remove the screw by the docking station symbol (near the center).
- Turn the machine over and open the lid all the way to 180 degrees.
- Lift out the keyboard--the sides are held in by tabs and the middle is clicked into a connector. I start by lifting up at the mouse buttons. When lifting from the middle, the keyboard bows a little before the sides click out but that seems to be by design.
- Remove the 4 screws from the heatsink and lift the heatsink toward the middle and up.
- Pop out the hinge cover and gently lift it (the right side is still held in).
- Thread the antenna through from the hinge, under the heatsink area (go across the foam seal) and at about a 45 degree angle to the MiniPCI compartment.
- Insert your MiniPCI card and snap in the U.FL connector so it stays.
- Use a sharp knife to take the cover off the bottom middle screw in the screen. Remove the screw too.
- Pop the screen apart a little bit and slide the antenna in the hollow part of the hinge cover about half way.
- Click the screen sides together.
- Put things back in the opposite order (reader exercise).
The setup has been working great. I'm still experimenting with the range but it's not as dependent on the antenna orientation as I originally thought it might be.