I have a ceiling fixture that has two bulbs in it. One went out. I replaced
it the one that went out, and it worked. I convinced hubby to change the
other one as well as I am sure it will go out soon. He did, and then both
didnt work. We did a whole series of changing of the lightbulbs, and it
appears the lights will only turn on if the original working bulb is in its
original spot, and a new one installed. If there is no bulb in the original
work position but a new bulb in the non-working position, no light will turn
on. If there is only a new bulb in the new position or old position, it wont
work. Only one configuration seems to work.
Can someone explain? I am not sure if it makes a difference, but the
original bulbs were incandescent, and the new bulbs purchased are the
I can't make sense of it, but I am sure there is a mathematical reason for
Thanks for helping.
My first guess is there is a mechanical problem in the fixture that is
pressured by the bulb into working. Remove the pressure and the connection
to the other bulb failes.