Chosen Solution
The switches never work when the device is plugged in.
Hairdryer won’t turn on Hold Down On/Off Switch Before taking any other action, try holding down the off button. The button may be loose or you may need to press it with more force. Electrical Connection Make sure that the plug is connected to an outlet in your wall. In addition, examine your wiring for any fraying that may be preventing electricity from reaching the motor. Power Supply If there is no clear solution, the problem likely lies in your power supply. Refer to this guide Hair Dryer Power Supply Replacement
