Introduction
The circuit board of the remote transmits the movement instructions to the car. If the remote isn't transmitting, the following steps will show you how to replace the circuit board.
Note: This guide will involve soldering. For information on how to solder, please visit iFixit's Soldering Skills page.
Tools
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Remove the 5mm Phillips #0 screw from the remote control.
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Using the tab, lift the battery cover from the remote control to expose the battery.
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Unscrew the six 5mm Phillips #0 screws on the back of the remote
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Separate the back of the remote from the front panel.
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Unscrew 5mm Phillips #0 screw located at the bottom of the board in the center.
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Remove the circuit board from the casing.
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Using the copper solder wick, remove the solder connecting the nine wires to the circuit board.
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To reassemble your device, follow these instructions in reverse order.