Ceiling closet light blew out. Checked bulb. Bulb good. Have 120v leaving light switch. Removed fixture. Have 120v at wires in ceiling when switch is on. When switch is off shows like 2 or 3 volts. Replaced fixture 3 times. No light!! Still have 120volts. If the breaker in the panel is going bad would it still have 120volts at ceiling? My thinking is if there is power than i should have light. Or is turning the switch on enough to draw away from the breaker and lose the voltage?? Please assist. Thanks in advance.