The post by @OtterBooks makes more sense than any I've seen regarding the unlighted Kindle cover problem. Many claim static electricity (a more likely problem in cold weather with dry air in heated buildings). Others thought some 'connectivity' between the hooks, although a video takedown and analysis showed that such was essentially impossible from just the metal hook connection to the Kindle. By insulating the metal hooks with paint, static charges could build up and jump rather than being bled off normally. Removing the paint is worth a try, because the leather Kindle cover is still the best protection I've found.
