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Are your Logitech MK345 keyboard keys not registering when pressed? If so, here is the repair guide for replacing your keyboard membrane. A keyboard membrane completes the circuit when a key is pressed, thus registering it, and providing feedback. It also protects the underlying circuitry from dust, debris, and spills, extending the life of the keyboard. If you haven't already looked at our troubleshooting guide for this issue, it's linked here. Make sure you turn off your keyboard and remove the batteries before beginning the repairs, so there is no energy going through the keyboard and thus no risk of electrocution.
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Gently flip over your keyboard so that the keys are facing down.
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Slide open the battery compartment on the bottom of the keyboard.
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Remove batteries from the compartment.
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Remove the thirteen 5.3 mm screws from the back of the keyboard using a Phillips #0 screwdriver.
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Pry up the corner rubber pads using a Jimmy.
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Remove the two 5.3 mm screws from the corners with a Phillips #0 screwdriver.
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Use your hands and opening picks to remove the back of the keyboard.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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