Pinwiki also shows how to do it. I wrote up the same method as shown in the video. I put the stopwatch there in the pictures to show that it takes around 39 minutes and 12 seconds to clean up (ultrasonic cleaner) and rebuild one of these assemblies, using no special tools.
http://www.pinwiki.com/wiki/index.php?title=EM_Repair#Drop_Targets