We never had a problem with lcd televisions left in an unheated house all winter.
We had a few problems with appliances that were not properly blown out of all water. The contractor that winterized the place did not get all of the water out of the ice maker system in our fridge and commercial ice machine which caused a few plastic fittings to crack. Both were easy fixes which I took care of.
One other time they did not take apart the mixing valve in the shower. Some water was left inside which cracked the plastic in the valve assembly. After that each year he took them complete apart.
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