A long sleep apparently allows corrosion and open or resistive joints to develop. Then there is the story that doubtful solder joints may remain serviceable by thermal cycles causing just enough movement to keep separated components polished and conductive.
Complex electronic equipment being turned on and off frequently to make sure it works is said to introduce accelerated deterioration of solder joints and components due to many unnecessary thermal cycles. QUOTE: "Just out of curiosity, have your cameras been sitting idle,- ".
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