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If your Asus Chromebook C202 model C202SA is experiencing USB connection or charge issues due to a faulty power adapter port, then it's time to swap out the Input/Output (I/O) board. The I/O board regulates external connectors like USB connectors and the input for charging.
Make sure that such a failure is not due to loose connections, software errors, or damaged cables prior to attempting this repair. If multiple USB devices and sources of power do not work, replacing the I/O board is a necessary step.
This repair takes some minimal disassembly. Be gentle with brittle ribbon cables. Before starting, power off the device completely and take out the battery to prevent electrical harm.
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What you need: 10 8mm screws, Tweezers, and a Phillips #1 Screwdriver
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Remove Phillips #1 screws from the bottom of the Chromebook using a Phillips #1 screwdriver.
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Use tweezers to get two of the screws are hidden by rubber caps along the rubber rest of the device out.
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crwdns2935267:0crwdne2935267:0iFixit Opening Tool$1.99
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What you need: plastic opening tool, Chromebook
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Place the plastic opening tool facing upward using the upper scoop, into the edges between the front and back of the Chromebook.
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Open the top portion of the Chromebook
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To unhinge the top portion of the Chromebook, push down on the plastic opening tool.
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In order to avoid damaging ribbon cables, gently lift the top portion of the Chromebook from the bottom portion.
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Gently disconnect the ribbon cable connecting the trackpad and the keyboard to the motherboard.
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Use a spudger or a clean fingernail to flip up the locking flap on each end of the cable—this is the unlocked position.
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Gently remove the ribbon cable connecting the I/O board to the motherboard.
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Remove two 4 mm Phillips #1 screws from the metal grate connected to the battery.
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Remove metal grate from battery.
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Remove six 4 mm Phillips #1 screws from the battery.
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Use the point of a spudger to push on alternating sides of the connector to "walk" it out of its socket and disconnect the battery from the motherboard.
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If that doesn't work, grip all the cables at once as close to the connector as possible and pull the connector slowly and steadily out of its socket.
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Lift the battery from the bottom edge to to remove it from the Chromebook.
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Remove two 4 mm Phillips #1 screws connecting the I/O board to your Chromebook.
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Slide the I/O board out from the edge of your Chromebook.
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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.
To reassemble your device, follow these instructions in reverse order. Take your e-waste to an R2 or e-Stewards certified recycler.
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Thanks for all your ASUS guides — saved me a packet when my son breaks his!