I wondered about this, researched it to a limited extent and then
thought - why take a chance? Not only is the cold a potential problem
but moisture etc. has a potential for causing problems as well. I
bought a quick-connect for all the pitot/static tubes on the panel and
installed a quick-connect for all the electrical wires leading to the
panel. When the glider comes home for the season, the panel comes out
of the glider and goes in the house. Takes about 5 minutes and the cold
and moisture hasn't caused a problem yet!

wrote:
Is it true or just an "old wives tale " ?

For several years now I've removed all the instruments with liquid
crystal displays ( LCD's) from my sailplane on the advice I got from an
"expert " some years ago . I was told that if you store the glider with
instruments in an outside hangar where the temperature drops to below
-20F at times , then that is very hard on the LCD's . I did in fact
have an old Garmin start up in the Spring one year after winter
storage, the screen turned brown then expired .

Thanks ,

Ron Clarke.