I have one of those Wellers (not that exact model but comparable), they're apparently considered "obsolete" now because of a relatively recent technology I'm forgetting the name of that heats up much faster and therefore maintains more consistent temperature (because it doesn't take nearly as long to compensate for the heat lost into the solder, or when cleaning the tip) but whatever. They were a production quality tool for a long time and they still workgreat, getting oen was one of the single best purchases I've ever made in my life and has payed for itself many, many times over with all of the relatively simple repairs that would have either meant paying someone or replacing gear before I learned how to solder and do run of the mill repairs and maintenence on synths (I have no EE background or anything so I'm not doing anything ancy).
Well worth it IMHO.
This is an old but really nice set of soldering tutorials that I wish I had seen when I was getting started in the mid 2000s and even now I picked up some tips about how to work on certain types of connectors. Videos 1, 6, 7 and 8 are the relevant ones but they're all good.
PACE Basic Soldering training films
Most music hardware is built around pretty simple, old technology so this is all still very relevant stuff even though it's from the 1970s.
Edited by RSP, 29 June 2018 - 08:59 AM.