DC Barrel Power Jacks and Barrel Size
Recently I was browsing instructables and noticed that there aren't any 'ables on how to figure out what size of DC powerjack one has or even for that matter how those barrel power jacks are measured.
One of the major things the DIY Laptop Repair guides overlook is how to identify which DC Jack you have so you can replace it. Most laptop DC jacks don't have part numbers unless they are from a main distributor like DELL. I've been reading a lot of conflicting information as to what really matters when your trying to find a replacement connector component. Some mention barrel length as being important whereas others focus on the inner and outer diameter. It sure would be nice if someone could write up an instructable on how to correctly identify these and what is important when looking for replacement parts like these.