The last thing you need in any circuit is a dry joint, by which I mean two wires twisted round each other or even worse. In a home, this can cause the power to keep on tripping, while in the low voltage world the result is a random electronic fault.
From time-to-time it’s necessary to get a soldering-iron out. Before you rush around looking for an Electrician Quote it might just be possible to do the job yourself.
• Preparation Clean both parts that you are planning to solder into a joint. Hardened, damaged wire is a recipe for disaster so make sure everything is shiny new by stripping off a fresh end. While at it, remove any vestiges of solder if you’re repairing an existing joint. That’s because solder does not stick to itself at all well when not fresh.
• Tinning Heat each surface in turn until it just melts a bead of solder. Work this back and forth until you see a little amber liquid appear. That’s the tinning that’s the meat in a good joint. It will be HOT. Allow the material to cool down naturally before you touch it with your hands.
• Soldering Mount the larger of the pieces to be joined securely in a vice. Heat up its surface until solder melts instantly on it. Place the other tinned piece in the pool of solder, remove the soldering iron, and wait until the surface of the melted solder goes slightly dull. Allow the joint, which will be HOT to cool naturally.
If you have a soldering iron that’s in good order and you have the time, you don’t really need to Find an Electrician, do you? But beware one thing, and that’s a bad joint. A London Electrician I know tests his apprentices’ work by seeing whether he can pull it apart.