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Steam Controller (2nd Gen, 2026) Main Board Replacement

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Follow this guide to replace the main board (aka motherboard or logic board) in your Steam Controller (2nd Gen, 2026).

The main board includes the USB-C charging port and thumbstick modules (including the thumbstick covers), which are all soldered in place. Unless you're comfortable soldering, the only way to replace any of these parts is to replace the entire zboard.

Replacing the main board can fix a variety of problems: a broken charging port, loose port connection, improper joystick input, broken joysticks, or intermittent shutdowns.

You may need additional software tools and calibration procedures to get your replacement main board to function as intended.

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  1. Steam Controller (2nd Gen, 2026) Main Board Replacement, Before you begin: crwdns2935265:01crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Before you begin: crwdns2935265:01crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Before you begin: crwdns2935265:01crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Let your controller's battery drain below 25% before starting this repair.

    • Unplug all cables and accessories from the controller, including the Steam Controller Puck.

    • During your repair, it can be helpful to lay the Steam Controller on a clean, soft cloth for stabilization and to prevent scratches.

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  2. Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the back cover screws: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the back cover screws: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
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    TR6 Torx Security Screwdriver
    $5.99
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  3. Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the back cover: crwdns2935265:03crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the back cover: crwdns2935265:03crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Remove the back cover.

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  4. Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the battery: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the battery: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the battery: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • If your battery is swollen, take appropriate precautions. Never reinstall a swollen battery—replace it with a new one.

    • Lift the right edge of the battery to remove it.

    • During reassembly, first slide the left side of the battery into place so its connector is fully seated. Then, press the right side into place to secure it.

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  5. Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the mounting bracket screws: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the mounting bracket screws: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • During the rest of your repair, don't forcefully push the controller down onto your work surface—you may damage the joysticks and trackpads.

    • Use a T6 Torx screwdriver to remove the four 7.4 mm‑long screws securing the battery mounting bracket.

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  7. Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the mounting bracket: crwdns2935265:06crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the mounting bracket: crwdns2935265:06crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
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  8. Steam Controller (2nd Gen, 2026) Main Board Replacement, Disconnect the rumble motors: crwdns2935265:07crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Disconnect the rumble motors: crwdns2935265:07crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Disconnect the rumble motors: crwdns2935265:07crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Don't pull on the rumble motor's delicate wires—they're easily damaged. Be careful not to pinch the wires with your tweezers, and only pull on the connector itself.

    • Firmly grip the short edges of one rumble motor connector with a pair of tweezers and pull straight up to disconnect it

    • Grip the tweezers as close to the tip as possible to get a better hold on the connector.

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  9. Steam Controller (2nd Gen, 2026) Main Board Replacement: crwdns2935265:08crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement: crwdns2935265:08crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement: crwdns2935265:08crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Repeat to disconnect the other rumble motor.

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  10. Steam Controller (2nd Gen, 2026) Main Board Replacement, Disconnect the interconnect cable: crwdns2935265:09crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Disconnect the interconnect cable: crwdns2935265:09crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Disconnect the interconnect cable: crwdns2935265:09crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Be careful not to damage any of the small, surface-mounted components on the main board.

    • Use a spudger to lift the hinged locking flap on the interconnect cable ZIF connector, located on the bottom edge of the main board.

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  11. Steam Controller (2nd Gen, 2026) Main Board Replacement: crwdns2935265:010crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement: crwdns2935265:010crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Use tweezers to grip the cable by its plastic pull tab and slide it out of the socket.

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  12. Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the main board screws: crwdns2935265:011crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the main board screws: crwdns2935265:011crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the main board screws: crwdns2935265:011crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Use a T6 Torx screwdriver to remove the three 7.4 mm‑long screws securing the main board.

    • When reinstalling the screws, raise the controller so the joysticks aren't pressed against your work surface—pressure on the joysticks can cause improper alignment and seating.

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  13. Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the main board: crwdns2935265:012crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the main board: crwdns2935265:012crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Remove the main board: crwdns2935265:012crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Pull the main board down so the top corners clear the triggers.

    • You should be able to remove the board without removing the triggers. If you're having trouble, check out this guide to remove them.

    • Remove the main board, guiding the joysticks through their cutouts.

    • During reassembly, make sure the two rumble motor wires don't get trapped underneath the board. Use the four alignment posts to ensure the board is properly positioned.

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  14. Steam Controller (2nd Gen, 2026) Main Board Replacement, Rubber piece information: crwdns2935265:013crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Rubber piece information: crwdns2935265:013crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Steam Controller (2nd Gen, 2026) Main Board Replacement, Rubber piece information: crwdns2935265:013crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • The rubber piece above the status LED may have been dislodged when removing the main board.

    • If the rubber piece is out of place, remove it and set it aside.

    • During reassembly, place the rubber piece so the two tabs are on the bottom and towards the back.

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To reassemble your device, follow these instructions in reverse order.

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.

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