The answer to 'my dimmer switch won't turn on' is that there are several common causes, including a faulty dimmer switch, loose wiring connections, or a problem with the electrical circuit. Symptoms may include the switch not responding when turned, the lights flickering, or the switch feeling hot to the touch.
Some potential solutions include checking the circuit breaker, inspecting the wiring for any loose connections, and replacing the dimmer switch if it's faulty. However, it's important to note that electrical work can be dangerous, so it's generally recommended to call a licensed electrician if you're not comfortable troubleshooting and repairing the issue yourself.