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Can you unsolder electronics from tv's and things and reuse them?

If so why go to radio shack and buy new parts? Just become good at unsoldering.

Grathio7 years ago
Seandogue is absolutely correct that even an unplugged TV can easily kill you if you muck around in it.  (So can other electronic stuff)

But yes, you can easily reuse components from old discarded electronics.  In fact the older the better since they are more likley to have "through hole" components (stuff that has wire leads that go through holes in the circuit board.)  Newer electronics are more likely to have special integrated circuits (which won't do you much good) and surface mount components which are really small and a real pain to work with.
framistan7 years ago
Televisions and VCR's and clock radios and old coffee makers and etc all have certain parts in them that can be usefull.  Thats why i dont throw them away immediately unless they start to stack up.  and too much junk around the house becomes a problem.  Not everything is available at radio shack, and some of the things JUNK provides is more convenient than radio shack.  Kind of depends on what you are building.  Stay out of microwave ovens untill you become very experienced at tinkering.  KNOW what you are getting into before tearing something apart.  OLDer picturetube tv's have a couple dangers within them.... mostly from high voltage stored in the picture tube EVEN when the TV is unplugged and OFF.  Also, the picture tube can IMPLODE if the "neck" of the picture tube is bumped too hard.  Other dangers also may be present that i cant think of right now... so be carefull out there. 
lemonie7 years ago
Yes, they're a great source of bits, but not necessarily in the best condition. However, do consider that some things may be best left intact - e.g. use the TV's high voltage supply or audio amp, rather than asking "how do I build an amplifier / high voltage supply? (out of the bits I de-soldered...)"

L
orksecurity7 years ago
You go to Radio Shack (or a better supplier) because, generally, for a nontrivial circuit you want specific components -- resistors and capacitors and inductors with particular values, transistors with particular transfer curves and power handling capability, particular ICs, and so on.

Also, scavenging parts takes time and effort, and may leave you with parts that have inconveniently short leads or have been previously stressed.

Scavenging is cost-effective for folks with limited budgets, lots of time, and good organizational skills (so you can actually find the right part again when you go looking for it). I did some of that as a kid. But by the time I was 16 or so, my time was worth more to me than the cost of components, and I was building things where "oh, it's close enough" wouldn't cut it.