I live in a home where we had a switch go bad in
If the problem arose after you replaced the switch in your boys room, that is where I would go to first in my attempt to troubleshoot the problem. After you pull the switch out, I would leave the switch in the off position, and check that 2 of the three wires in that box are receiving power.
If there is only a single with power then that is the power coming into the switch box, and it is very likely that one of the other wires is intended to feed beyond. A good way to check this would be to turn the switch on and see if your daughter's switch is getting power when that switch is on. If this is the case, the next part becomes a little tricky.
1. turn the switch in your boys room off
2. disconnect only one wire from the 2 that do not have constant power.
3. turn on switch, if light for the room turns on, then attached wire is switch leg for the light, and disconnected wire is power out of rest of the circuit.
CAUTION: turn off power at breaker before continuing
4. once you know which is the switch leg, and which is the out for the rest of the circuit, junction the in wire with the out wire, and attach a single wire to this junction twisting all three together, put a wirenut on the junction, and re-attach to switch.
once this is done, you should be able to turn the breaker back on.
If the above instructions are not needed, it is possible that the switch is fed from a plug in the room, and that a connection on the plug could have gone bad. In this case, you should once again, turn the breaker for the room off first.
1. pull out the plug
2. ensure that all wires are wrapped around the screws, not pushed into the holes in the back of the device. Black to brass, White to silver, Ground to green
3. put the outlet back and turn the breaker back on
4. test the switch
I hope that this proves helpfull and resolves your problem. please let me know if you have any questions
on Feb 22, 2010