It depends what is broken at the soldering iron. It can be that the equipment should be repaired by a professional electrotechnican. It is not recommended to fix tools like this by the person itself.
You can fix a leaking copper pipe without soldering by using a compression fitting or a push-to-connect fitting. These fittings can be easily installed without the need for soldering equipment.
buy a new one and wire it up with a soldering iron
If you mean cracked get a soldering iron and go over the crack very carefully to weld it back together.
You need a soldering iron and some solder for a lose wire, anything other then that I would recommend bringing it to a shop.
With torches and soldering sticks.
Equipment is a tool like a pencil or tools to fix cars. I wanted to change a flat tire on my car but I didn't have the right equipment. A dentist needs to have a lot of equipment to fix teeth.
There are two parts of the headset, the microphone and the speaker. to fix the speaker: take the foam off the speaker, press in the four tabs with a knife or screwdriver and pull out the speaker. Look for loose connections and fix them with a soldering iron and solder. to fix the microphone: the wires that control the microphone are the white and bare wires. there is a circuit board inside the earpiece of the headset and there should be four connections (2 white and 2 bare) on the top. there may be wires loose or a bad connection. you can fix these with a soldering iron and solder, but unless you are good at soldering i recommend that you stick with cleaning it. and maybe use some electrical tape. the speaker part of the headset is an easy fix but if you find that it is the microphone, you might just go get a new one and save yourself some time because the mic is difficult for a new solderer to fix.
You could try soldering
To identify a cold solder joint on your guitar, look for a dull or grainy appearance on the solder connection. To fix it, reheat the joint with a soldering iron until the solder flows smoothly and forms a shiny, solid connection.
Open up your amp and see if there is loose wiring on your on/off switch. If so, you can take a soldering iron and fix it. If that doesn't work, or that's not the problem, then you can take it in to a guitar shop for a replacement switch, which will only cost you around $10.
Iron clamps are commonly used in woodworking and metalworking to hold materials securely in place during cutting, drilling, or gluing. They are also used in construction to secure beams and boards together. In addition, iron clamps can be used in automotive repair to hold parts in position while welding or soldering.
It's much cheaper to get replacement parts and instructions and fix it yourself. Things like that are pretty easy to fix with diagrams honestly. I would look it up on www.ehow.com there are instructions to fix most things on there.