SHOWALL
Figure 14 - The pins may need to be wiggled after using the solder sucker
Figure 14 - The pins may need to be wiggled after using the solder sucker

Once you have heated up the solder and used the desoldering tool to pull up the solder on all of the pins, the part may lift from the board with a slight prying or rocking motion. If the device seems to be stuck, there may be a small amount of solder stuck around the edge of the hole. To release the stuck pins, just wiggle them with tweezers or pliers until they are visibly unstuck from the edge of the holes and then try prying up the part once again. For large pin packages, it may also be necessary to pry up the edge end with a small screwdriver, but do so carefully or you may snap a pin or the package of the device. Almost any through-hole component can be removed if you take your time and clear all of the solder holes.



Figure 15 - A massive inventory can be built from only a few old circuit boards
Figure 15 - A massive inventory can be built from only a few old circuit boards

If you have the patience and a good pile of scrap circuit boards, you can build a massive inventory in a few days. Most of the time, I use salvaged components as it is annoying to have to pay $20 in shipping and wait a week for a few single odd value resistors or capacitors for a project. Salvaging ICs and transistors is also a huge time saver as long as you can find datasheets and sort out the parts in some logical order. Resistors and capacitors are easy to sort by value range, and there are also many common ICs such as op amps and logic circuits that can be grouped together to form a good inventory.

So, tell all your friends and family that anything with a power cord can be sent to your evil genius laboratory, not the garbage can or landfill! A few old DVD players can probably net you hundreds of dollars in single components, if you have the time and patience to unsolder and sort them. I also keep many large tubs of boards to check for oddball resistor and capacitor values when I need something special, only salvaging what I need at the time. It is a rear occasion that I cannot find a part in my huge junk pile unless it's something very new or specialized. An inventor can never have enough junk!
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