Reduce, Re-use, Recycle!

Lately I've been taking my spare time and using it to sit down (or sometimes stand) and desolder stuff from circuit boards. Just from one old computer motherboard that no longer works, you can harvest quite a few fully functional capacitors.

For my example I'll post a couple pictures I took a while ago, one is a pile of parts beside my keyboard from an old motherboard I nearly completely stripped except for the sockets and other things I didn't need or didn't have the patience for.

Tonight I found 4 more things to strip down, 2 mini power supplies (one from an old xbox, one from a junk tv set top box) and two toasted subwoofer amplifiers (no I don't plan on harvesting the transistors from them).

I find it completely wasteful to see all the electronics that go into the landfill, simply because it broke, and from experience a lot of electrical failures are usually limited to one or two parts shorted out or gone bad (although this is not always the case). So this is my little "effort" to help save the planet. Does anyone think I could sell bulk "used" capacitors/resistors/diodes in say, mystery bags with random types of capacitors/resistors/diodes? I'm also doing this for my own personal sanity as I have gone to fix several motherboards in the past that simply required a bad capacitor to be replaced, woopy do, but it does no good if I can't find any parts in my parts bins!

What do you guys think!? Also, would someone be willing to help me (maybe through msn would be easiest) identify certain parts I've found that I'm not entirely sure what they do or they're lacking of any useful numbers on them????

sort by: active | newest | oldest
1-10 of 18Next »
lemonie7 years ago
I do this too, mixed bags you may be able to shift. Note that there's probably a market for Joule-Thief kits: ferrite toroid, transistor etc. in a bag. Also voltage regulator bags.

Punkguyta (author)  lemonie7 years ago
 Oh sweet idea lemonie, tell me more in PM, the joule theif idea actually sounds swell to me, I should put kits of something together.
Well, I've been stripping old electricals for years. I've not done too much with the bits, but I'm in the same situation as you are.

Punkguyta (author)  lemonie7 years ago
 Yeah but then, is it just a waste of time to do said stripping?
I've done things with 'em, I just have a large inventory at the moment.
Hence this question.

Punkguyta (author)  lemonie7 years ago
 Holy.. And all I wanted to do was build some simple solar charging circuits and little things to monkey around with.
gmoon7 years ago
Ever tried the "torch technique" for desoldering?

Heat the backside of the pcb quickly with a propane torch (or a butane "pencil" torch), then whack the board on the floor to dislodge the components.

It's usually so fast that very little heat gets transferred to the ICs. A soldering iron just takes too long for a large DIP, and tends to heat it up too far.. You can do it on a small area, too--like a single IC, with the pencil torch. I've had about a 90% success rate doing this...

Doesn't work so well with bent lead components unless you use pliers or vicegrips.

You can use a decent heat gun, too.

Punkguyta (author)  gmoon7 years ago
 I've wondered about that method, and then maybe also the possibility of attaching it to an old subwoofer or something to "shake" the parts out.
gmoon Punkguyta7 years ago
I don't know if that would work; slapping the board is kinda "directional." The more mass each part has, the better it works.

But it has the potential of at least being a spectacular failure if it doesn't work.
dboone6287 years ago
I see two photocouplers (opto-isolators) in picture 7. They might be useful.
1-10 of 18Next »