The rosin from the fresh solder also helps to clean the solder joint and makes de-soldering faster.ģ. I have found that adding fresh solder makes it much easier to cleanly remove the solder from the pad. Melt the marked solder joints with a soldering iron and add fresh solder to the pad. I mark the pads with a sharpie to help make sure I un-solder the right leads.Ģ. Identify the through-hole PCB pads that the part you want to salvage is soldered to. My process for removing the parts I want is:ġ. 60/40 Rosin Core Solder (Radio Shack Catalog #6400009) Desoldering Braid (Radio Shack Catalog #6402090)Ĥ. Desoldering Pump (Radio Shack Catalog #6400210)ģ. 25W Fine Tipped Soldering Iron (Radio Shack Catalog #6400206)Ģ. I use the following tools to remove parts from salvaged equipment:ġ. But as it is right now the amplifier works and sounds great.
Before I call the project completed, I need to add a heat-sink to the amplifier IC and some vent holes in my project box. This Instructable is the project I built with a schematic from the IC datasheet and some parts I removed from an old CB radio. After he taught me how to solder and we completed the Velleman kit, he gave me a challenge to build an Audio Power Amplifier using only a schematic and a bunch of my salvaged parts. My uncle took me to Radio Shack and bought me some soldering tools, parts, a digital multi-meter, and a Velleman LED blinker kit to practice soldering with. But the rest have a good chance of being usable even after 40 years. In older equipment you have to be careful with electrolytic capacitors and some power resistors due to changing values over time.
These radios have tons of useful parts like transistors, resistors, crystals, IC's, and ceramic capacitors. I got lucky and found three 1970's and 1980's vintage CB radios that weren't working. But in my area I have been successful obtaining recyclable equipment made in the 80's that have lots of components I can reuse. A lot of modern electronic devices aren't good candidates for part recycling due to the size of the components. A lot of people will gladly donate unwanted radios, stereos, CD radios, and other devices to someone like me that wants to learn and is willing to come get them. I enjoy salvaging electronic parts from discarded equipment.
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