Before deciding to call a professional garage door repair Garden Grove service provider for a garage door repair, it could save you time and money doing some quick fixes or troubleshooting first. A garage door that does not respond to the wall switch or the remote control may have power supply or obstruction problems. To troubleshoot this garage door opener issue, you should examine the power supply. Be sure to properly check the wirings for possible disconnections or signs of short circuiting. Ascertain that the garage door motor is properly plugged to the power supply. Likewise, be sure that your wall outlet indeed has electricity running through it. Inspect the circuit breaker, fuse, and GFCI to be sure that there are no problems with the circuitry. Moreover, it is also necessary to clean the sensors and to make sure that there are no obstructions between the garage opener remote and the door opener sensor.