Little bit vague. Depends on how it works. Some of the older ones merely
picked up hum through your body and could be finicky about where they were
operated, some ar capacitance operated and people used to polish them and
the dirty polish shorted out the insulators between the touch bit and the
rest making it whatever the touch equivalent of deaf might be called. Then
again even corrosion of the bit that connects to the bit you touch can do
it.
I myself never had much luck with touch switches they would come on when
not wanted, fail to turn off or just do odd things. I blame my magnetic
personality.
Brian

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The Sofa of Brian Gaff...

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"petek" wrote in message
...
I have a floor standing lamp which has a touch sensitive switch. If you
touch the lamp housing or upper part of the stem the lamp toggles through 2
or 3 brightness levels and on/off. It hasn't been used for some time but
when I tried it the other day it is not working, i.e. it won't switch on.
I've changed the bulb but still no joy. Any ideas what the problem is, and
if it is repairable? TIA
Pete