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Use this guide to replace the power button board in your Lenovo ThinkPad T470.

The power button board contains the button that turns on the computer when pressed. Diagnosing a faulty power button may be tricky since some of the symptoms are similar to a faulty battery or AC adapter. If you are pressing the power button but your laptop is not turning on, take a look at this Lenovo ThinkPad troubleshooting manual before attempting a power button board replacement.

If you need to perform a replacement, make sure to disable the internal battery, power down your device, and disconnect from any external power sources before you begin.

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  1. Lenovo ThinkPad T470 Power Button Board Replacement, External Battery: step 1, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement, External Battery: step 1, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement, External Battery: step 1, image 3 of 3
    • Before you begin this guide, make sure to disable the internal battery, power down your device, and disconnect from any external power sources.

    • Place the laptop so that the bottom is facing upwards.

    • Slide the latch on the left side of the battery to the left until it clicks in place.

  2. Lenovo ThinkPad T470 Power Button Board Replacement: step 2, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 2, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 2, image 3 of 3
    • Slide the latch on the right side of the battery to the right and hold it in place with your thumb.

    • Use your other hand to slide the battery towards the back of the laptop.

    • Lift the battery up and away from the laptop.

  3. Lenovo ThinkPad T470 Power Button Board Replacement, Internal Components: step 3, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement, Internal Components: step 3, image 2 of 2
    • Use a Phillips #1 screwdriver to loosen the six captive screws on the bottom cover of the laptop.

  4. Lenovo ThinkPad T470 Power Button Board Replacement: step 4, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 4, image 2 of 2
    • Place the laptop so that the top is facing upwards.

    • Open the lid of the laptop.

  5. Lenovo ThinkPad T470 Power Button Board Replacement: step 5, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 5, image 2 of 2
    • Place your fingers on the bottom edge of the keyboard.

    • Use a small amount of pressure to push the keyboard towards the screen.

  6. Lenovo ThinkPad T470 Power Button Board Replacement: step 6, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 6, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 6, image 3 of 3
    • Grab the bottom edge of the keyboard with your hands, and flip the keyboard upside-down, so it rests on the bottom of the laptop.

    • Potential for device damage: The keyboard is still attached to the rest of the laptop, so be gentle when flipping it over.

  7. Lenovo ThinkPad T470 Power Button Board Replacement: step 7, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 7, image 2 of 2
    • Use the flat end of a spudger to flip up the locking flaps securing each of the two ribbon cables.

  8. Lenovo ThinkPad T470 Power Button Board Replacement: step 8, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 8, image 2 of 2
    • Use your hands to lift the keyboard up and away from the laptop.

  9. Lenovo ThinkPad T470 Power Button Board Replacement: step 9, image 1 of 1
    • Close the laptop's lid and flip the laptop over so that the bottom is facing upwards.

  10. Lenovo ThinkPad T470 Power Button Board Replacement: step 10, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 10, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 10, image 3 of 3
    • Use your hands to pull up on the back cover and release the plastic clips starting on the bottom side of the battery compartment.

    • Potential for device damage: Be sure to detach the plastic clips in this area first. You risk cracking the bottom cover if you attempt to detach it from around the edges of the laptop first.

    • Use your hands to pull up on the right side of the bottom cover to release the plastic clips.

    • Use your hands to pull up on the left side of the bottom cover to release the plastic clips.

  11. Lenovo ThinkPad T470 Power Button Board Replacement: step 11, image 1 of 1
    • Remove the bottom cover from the laptop.

  12. Lenovo ThinkPad T470 Power Button Board Replacement: step 12, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 12, image 2 of 2
    • Use a Phillips #1 screwdriver to remove two 5 mm screws from the internal battery.

  13. Lenovo ThinkPad T470 Power Button Board Replacement: step 13, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 13, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 13, image 3 of 3
    • Use your hands to lift the battery up and away from the laptop.

  14. Lenovo ThinkPad T470 Power Button Board Replacement: step 14, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 14, image 2 of 2
    • Use your fingers to flip the black flap covering the top stick of RAM down.

  15. Lenovo ThinkPad T470 Power Button Board Replacement: step 15, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 15, image 2 of 2
    • Use your thumbs to push the metal clips on either end of the RAM outwards.

    • The RAM will pop up by a few millimeters.

  16. Lenovo ThinkPad T470 Power Button Board Replacement: step 16, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 16, image 2 of 2
    • Use your fingers to lift the RAM out of its socket and away from the laptop to remove it.

  17. Lenovo ThinkPad T470 Power Button Board Replacement: step 17, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 17, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 17, image 3 of 3
    • Use your fingers to flip the black flap covering the bottom stick of RAM up.

    • Use your thumbs to push the metal clips on either end of the RAM outwards.

    • The RAM will pop up by a few millimeters.

  18. Lenovo ThinkPad T470 Power Button Board Replacement: step 18, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 18, image 2 of 2
    • Use your fingers to lift the RAM out of its socket and away from the laptop to remove it.

  19. Lenovo ThinkPad T470 Power Button Board Replacement: step 19, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 19, image 2 of 2
    • Use the flat end of a spudger to flip up the metal clip securing the SSD connector to the motherboard.

  20. Lenovo ThinkPad T470 Power Button Board Replacement: step 20, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 20, image 2 of 2
    • Use the flat end of a spudger to separate the connector from its socket.

  21. Lenovo ThinkPad T470 Power Button Board Replacement: step 21, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 21, image 2 of 2
    • Grab the tab on the left side of the hard drive, and pull up to remove it from the laptop.

  22. Lenovo ThinkPad T470 Power Button Board Replacement: step 22, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 22, image 2 of 2
    • Use a finger to press the black flap covering the Wi-Fi card down.

  23. Lenovo ThinkPad T470 Power Button Board Replacement: step 23, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 23, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 23, image 3 of 3
    • Use the flat end of a spudger to disconnect the two coaxial wires from the Wi-Fi card.

    • When reassembling, reattach the gray wire on the left and the black wire on the right.

  24. Lenovo ThinkPad T470 Power Button Board Replacement: step 24, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 24, image 2 of 2
    • Use a Phillips #1 screwdriver to remove the single 4 mm screw from the Wi-Fi card.

  25. Lenovo ThinkPad T470 Power Button Board Replacement: step 25, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 25, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 25, image 3 of 3
    • Use your fingers to lift the Wi-Fi card up and out of its slot.

    • This laptop does not include a WWAN card, but if yours does, follow the same procedure as Steps 9-12 to remove it.

  26. Lenovo ThinkPad T470 Power Button Board Replacement: step 26, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 26, image 2 of 2
    • Use a pair of blunt nose tweezers to pull the white connector out of its socket.

  27. Lenovo ThinkPad T470 Power Button Board Replacement: step 27, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 27, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 27, image 3 of 3
    • Grab the wire attached to the coin cell battery, and lift it up and out of the laptop.

  28. Lenovo ThinkPad T470 Power Button Board Replacement: step 28, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 28, image 2 of 2
    • Use a pair of blunt nose tweezers to pull the white fan connector out of its socket on the motherboard.

  29. Lenovo ThinkPad T470 Power Button Board Replacement: step 29, image 1 of 1
    • Use a Phillips #1 screwdriver to loosen the first pair of captive screws on the fan and heat sink assembly in a crosswise pattern.

    • Use a Phillips #1 screwdriver to loosen the second pair of captive screws on the fan and heat sink assembly in a crosswise pattern.

  30. Lenovo ThinkPad T470 Power Button Board Replacement: step 30, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 30, image 2 of 2
    • Use your hand to pull the fan and heat sink assembly up and away from the laptop.

    • Clean the thermal paste from the heatsink and CPU and reapply fresh paste before reassembling.

  31. Lenovo ThinkPad T470 Power Button Board Replacement, Motherboard: step 31, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement, Motherboard: step 31, image 2 of 2
    • Use the flat end of a spudger to flip up the metal clip securing the LCD cable to the motherboard.

  32. Lenovo ThinkPad T470 Power Button Board Replacement: step 32, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 32, image 2 of 2
    • Use the flat end of a spudger to disconnect the LCD cable from its socket on the motherboard.

  33. Lenovo ThinkPad T470 Power Button Board Replacement: step 33, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 33, image 2 of 2
    • Use the flat end of a spudger to flip the power button cable's black tab up.

  34. Lenovo ThinkPad T470 Power Button Board Replacement: step 34, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 34, image 2 of 2
    • Use the flat end of a spudger to slide the power button cable out of its connector on the motherboard.

  35. Lenovo ThinkPad T470 Power Button Board Replacement: step 35, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 35, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 35, image 3 of 3
    • Use your fingers to detach the red and blue antenna cables from their slots.

  36. Lenovo ThinkPad T470 Power Button Board Replacement: step 36, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 36, image 2 of 2
    • Use a Phillips #1 screwdriver to remove the two 4 mm screws from the USB bracket.

  37. Lenovo ThinkPad T470 Power Button Board Replacement: step 37, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 37, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 37, image 3 of 3
    • Use your fingers to lift the USB bracket up and away from the laptop.

  38. Lenovo ThinkPad T470 Power Button Board Replacement: step 38, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 38, image 2 of 2
    • Use a pair of blunt nose tweezers to disconnect the DC-in cable from its socket on the motherboard.

  39. Lenovo ThinkPad T470 Power Button Board Replacement: step 39, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 39, image 2 of 2
    • Use the flat end of a spudger to flip up the metal bracket securing the camera cable to the motherboard.

  40. Lenovo ThinkPad T470 Power Button Board Replacement: step 40, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 40, image 2 of 2
    • Use the flat end of a spudger to disconnect the camera cable from its socket on the motherboard.

  41. Lenovo ThinkPad T470 Power Button Board Replacement: step 41, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 41, image 2 of 2
    • Use a pair of blunt nose tweezers to disconnect the speaker cable from its socket on the motherboard.

  42. Lenovo ThinkPad T470 Power Button Board Replacement: step 42, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 42, image 2 of 2
    • Use the flat end of a spudger to flip up the black tabs on the trackpad and fingerprint reader cables.

  43. Lenovo ThinkPad T470 Power Button Board Replacement: step 43, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 43, image 2 of 2
    • Use a pair of blunt nose tweezers to slide the trackpad and fingerprint reader cables out of their connectors on the motherboard.

  44. Lenovo ThinkPad T470 Power Button Board Replacement: step 44, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 44, image 2 of 2
    • Use a Phillips #1 screwdriver to remove the three 4 mm screws from the I/O bracket.

  45. Lenovo ThinkPad T470 Power Button Board Replacement: step 45, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 45, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 45, image 3 of 3
    • Use your fingers to slide the I/O bracket to the left.

    • Lift the I/O bracket up and away from the laptop.

  46. Lenovo ThinkPad T470 Power Button Board Replacement: step 46, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 46, image 2 of 2
    • Use a Phillips #1 screwdriver to remove the six 4 mm screws from the motherboard.

    • This laptop does not have an NFC cable, but if yours does, use the flat end of a spudger to flip up the tab and slide the cable out of its connector.

  47. Lenovo ThinkPad T470 Power Button Board Replacement: step 47, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 47, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 47, image 3 of 3
    • Use both hands to lift the motherboard up and away from the laptop.

  48. Lenovo ThinkPad T470 Power Button Board Replacement, Power Button Board: step 48, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement, Power Button Board: step 48, image 2 of 2
    • Use a Phillips #1 screwdriver to remove the two 4 mm screws from the power button board.

  49. Lenovo ThinkPad T470 Power Button Board Replacement: step 49, image 1 of 2 Lenovo ThinkPad T470 Power Button Board Replacement: step 49, image 2 of 2
    • Peel up the white ribbon cable.

    • Potential for device damage: The cable may be attached to the laptop with strong adhesive, so be cautious not to tear it.

  50. Lenovo ThinkPad T470 Power Button Board Replacement: step 50, image 1 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 50, image 2 of 3 Lenovo ThinkPad T470 Power Button Board Replacement: step 50, image 3 of 3
    • Use your fingers to lift the power button board up and away from the laptop.

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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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