Introduction
For a sticky Cold Shot button, you may only need to clean the button. This guide will show you how to fully remove and replace the button.
Note: This guide requires soldering skills. If you don't know how to solder or want to brush up on your skills check out this handy tutorial.
Tools
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            Starting from where the cord attaches to the handle, pull apart the two plastic panels. 
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            Continue separating the back panel, working along the seam. 
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            With moderate force, completely remove the back panel from the hair dryer. 
 
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            Hold the hair dryer by the nozzle so that the handle points to the left. 
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            Remove the two 1-inch Phillips #2 screws from the back of the fan motor. 
 
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            Pull on the back of the fan motor to gently lift the motor out of the hair dryer. 
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            Lift the attached electrical wiring and heat shield completely out of the hair dryer. 
 
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            Focus on the button closest along the wires to the fan motor. 
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            Desolder the button at the circled locations. 
 
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To reassemble your device, follow these instructions in reverse order.