Third it is a three way switch. The other 2 switches appear to either do nothing or they are dead.
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Neon Circuit Tester
Light switch reversed itself. A corroded contactor inside the switch could cause the flicker but would also probably cause the switch to feel warm at the touch. Dimmer in kitchen 5 dimmable flood lights went out. If a two way switch swapping l1 and l2 assuming one terminal marked common will swap the way they work. The switch and dimmer work fine but the operation of the switch is reversed. Went to home depot and bought new dimmer boucht cfl compatible dimmer as tried cfl floods before and they only lasted a few weeks hooked up same way as before. But you are describing a three way switch and the other one was used to turn the light on or off which reversed the function of the one you usually use.
If it is a single pole and not a decora style it should have on and off printed on it and would be impossible to reverse the function. There are no on or off markings but the light that stays constantly on is controlled by one switch that is located on panel with 2 other switches. Maybe worth pointing out that if you plan to change a light switch you pay very careful attention to where the various wires go and ensure you put each wire in the same terminal on the new switch. With non two way then must turn switch. Either switch can turn the light on or off. With the switch mounted in the upright position.
If this is the case perhaps the other switch is seldom used and. Ive had switches where they kinda seemed to have reversed but once you fuck with them for a minute everything lines back up to how its supposed to be. The switch that suddenly reversed itself is a single switch thats on a different circuit from the one that wont turn off. There are no on or off markings but the light that stays constantly on is controlled by one switch that is located on panel with 2 other switches. The switch that suddenly reversed itself is a single switch thats on a different circuit from the one that wont turn off. Id recommend getting it replaced.
Look at the switch. Loose electrical connections can lead to fires. A wire getting loose in a terminal screw or in a wire connector at the switch or light fixture could cause the flicker. The other 2 switches appear to either do nothing or they are dead. This can be caused by different events. With large switches it is considered should anything drop on the switch and operate it then it should switch it off.
Another possibility is that someone literally flipped your switch. Took picture and my wife double checked 3 black wires on top right. However what is the right way. Hj mar 22 2011. Moving the switch lever to the up position turns the lights off moving the switch lever to the down position turns the lights on. That means there are two switches controlling one light.
Gallery of Light Switch Reversed Itself
