Poulan PRO BMV200 Gas Blower
The Poulan PRO BMV200 gas blower would not start. 
The solutions for two consumers are reported in the YouTube videos below with the YouTube links given to the right of the video:http://www.youtube.com/watch?v=qaC_nRqzh3QHowever, after discovering that the compression was only about 60PSI instead of 100PSI or so, the author simply put a few drops of heavy oil directly into the cylinder. That raised the compression ratio to about 120PSI and the blower started right up and ran perfectly.
http://www.youtube.com/watch?v=rdlQ5Zwti-oUnfortunately, after about 3 weekends of blowing leaves, there is now no spark.
Those gas blowers really are a “piece of spit” (notice the letter ‘p’) as reported by the youngster in the YouTube video below:http://www.youtube.com/watch?v=2rxU3tjJ3Co
Canon PowerShot A720 Digital Camera
The Canon PowerShot A720 Digital Camera lens got stuck and would not take photos. 
The solutions for two consumers are reported in the YouTube videos below with the YouTube links given to the right of the video:http://www.youtube.com/watch?v=3wk4nGputrIMany times, the problem can be solved by using new fully-charged batteries.
http://www.youtube.com/watch?v=Ff_J9tn5tZU
A 110 AC Volt Power Adapter is used whenever possible.