I have two 3 way switches controlling one light. Sometimes when the light is on neither switch will turn off the light but one of the switches will turn light off if switch is placed half way between on and off. Would this be the switch that is wired wrong or do I have to take off the plates and look at wiring of both ?
In both pics the left most switch are the problem ones. Strange thing is they both looked wired correct. It appears the travelers red and black are both on bottom.