Plastic bases or other plastic in fixture can outgas due to high heat
casuing a film on the bulbs as one cause.
"Tekkie®" wrote in message
ganews.com...
Joseph Meehan posted for all of us...
I don't top post - see either inline or at bottom.
Doug Kanter wrote:
...
Vibration will affect bulb life, but not the tendency of the bulb's
threads to get locked in place. And, the same thing happens with
base-up installation in things that do NOT vibrate, like certain
light fixtures.
Maybe because heat rises. Curious.
I think it's more along the lines of:
CHEAP sockets.
CHEAP bulb bases
Sockets and bulbs used to be brass now they are alumimum foillike...
--
Tekkie
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