Hi, I have a light switch that won't stay in the off position. It's not a wiring problem; it's the switch itself. I have a white, flat panel switch, not the black one that you push up or down to turn the light on/off. Is this something I can change myself? I have no electrical knowledge whatsoever.
This is usually really easy. There are books in your local library on home repair with lots of picture that may help you. Turn off the power to that light at the breaker box or fuse box. Remove the screws that hold on the cover plate at the switch. Remove the cover plate. Remove the screws that hold the switch to the junction box. Pull the switch out of the junction box. Look at the wires attached to the switch (often black, white, green). Draw a diagram of these wires and the switch and then disconnect them. Take the switch to the hardware store. Find one like it. Reverse the above to install the new switch. There will be instructions on the package of the new switch which may help you. If you can't find the same type then you can substitute another type. The wiring will be essentially the same but you must buy a cover plate to fit the new type of switch. Note that the color of the switch and plate should match and should match the rest of the room's cover plates (white, ivory, brass, et c.). After you attach the wires to the switch neatly fold the wires into the junction box so that the switch will fit. You'll need a flat head screw driver and maybe a set of needle nosed pliers.
Well, it is almost that simple. There might be more than 2 wires, so make careful note of where wires go before you disconnect anything. I have started taking digital photos of stuff before I take it apart, just in case. It is has been a waste of time so far, but one day...
A word or warning. Normally it is easy and the instructions provided are all you will need. However be aware that if there are more than two wires (or three if one is bare copper) in there, some may be hot (dangerous) even if you turned off the power to the light. This will not happen often, but it can happen. Turning off all the power to the house will assure you are safe.
True enough, and your advice to the OP is sound. But...
...sometimes it's not so easy.
If his existing wiring was competently done, and not too old, he should be OK. But in my 1949 vintage house, I have found examples of incompetence and excessive age. The most common problem is that the people who wired this house didn't much believe in slack. One switch I had to replace actually would not come out of the box AT ALL. I can't figure out how they installed it in the first place. Although that one was the extreme, none of the other fixtures I've tackled had anything like the proper amount of slack either. This can make the wiring trickier than it ought to be. I've extended the wires in each box I've opened.
Age has also reared its ugly superannuated head. The insulation on some of my wires was very fragile. I suppose if no one had touched them, they might have remained safe for another few decades, but the slightest rough treatment damages them. That's a harder problem to deal with.
I'm not trying to scare the OP. I think that replacing a switch ought to be within the skills of the average homeowner; It's an awfully small thing to pay an electrician for. I would say that if he can pull the switch entirely out of the box and the wire looks to be in good shape he should go for it.
One last safety warning: Put a note on your breaker or fuse box that says "DO NOT TOUCH! WORK IN PROGRESS" or something to that effect. Don't want any helpful roommate / spouse / etc. zapping you.
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