I’m not sure if Strimmer is a brand name. In Hungarian it’s fűkasza and my son has a toy one that lights up green, spins like a real one and makes engine noises when you pull the trigger. Or at least it used to. Now when you pull the trigger it doesn’t spin and only makes a sound sometimes. First I thought he might’ve left it out in the rain but after taking it apart I found out actually the wires had come apart on the inside.

I’m not sure if this is a design fault in the toy or if it’s because of him knocking it on the ground, copying me activating the spring to release more of the string while I’m working. This made the solution clear though, I just had to re-solder the wires. I’d tried this in the past and the results were bad but it worked. This time I tried holding the soldering iron underneath the wires and heating them from the bottom instead of the top. That way, when I tap the solder onto the heated wires it melts onto them instead of getting stuck on to the iron. The results look like this:

Keep in mind I’m an amateur at soldering. Still, it’s much neater than my previous attempts, so I’ll keep this technique. As for the sound only working sometimes, it turned out sometimes the batteries would get lose and come out of place slightly because their enclosure was too big, so I just fixed that by putting a blob of glue tack on them 😀