D-Link DIR-890L Power Adapter Port Replacement

Peel off the four rubber rectangular feet with your fingers.

Unscrew the 5mm screws in each corner using the Phillips #1 screwdriver.

Wedge the opening tool between the red top panel and the gray bottom panel.

Twist the opening tool to separate the panels. Work your way around the case until both of the panels are separated.

Orient the router so the narrow end of the router faces you and the ports face away from you.

The six, hot-glued antenna connections are in the middle and at the top right of the motherboard.

Pry off the antenna connectors using a heavy-duty spudger.

Continue to pry off the last three antenna connections on the upper right portion of the motherboard.

Open the plastic bracket enclosing the three antenna wires and pull the wires out with your hands.

Pull the yellow tape off of the motherboard to release the final antenna wire.

Pull the the motherboard away from the case to remove it. Start on the side closest to you, and pull up and out.

Locate the power adapter port at the top left of the motherboard.

Flip the motherboard over.

Locate the 3 solder joints that connect the power adapter port to the motherboard.

Using a soldering iron and desoldering pump, desolder the power adapter port from the board.

For more information, see this guide on desoldering