Television storage and cold temperatures

Thanks for all of the thoughtful replies. The idea that destruction is caused by powering up when cold makes me realize what has been happening. Last autumn the grandchildren camped with us and set the alarm feature on the TV to turn on in the middle of the night then turn off after an hour or so. With the trailer parked in a remote shed all winter, plugged into a 30 amp service, it would have powered up every night for the entire winter with no one to witness. I discovered the alarm function being on during our first night out this season but just didn't think through the consequences.
You folks are a great source of practical knowledge -- thank you.