Tips on how to start with microsoldering

@vorsichtkarsten my suggestion would be to get tools that you are comfortable with. Everybody has their own technique and does things a bit different. I have seen people do amazing repairs with a department store soldering iron and a wrapped around copper wire to create a J-tip. If you are planning on doing a lot of repairs, stick with brands that will be around for a while. Those are companies like Hakko and Weller, that way you have some parts and supply support for later on. iFixit has some great tools https://www.ifixit.com/Store/Tools/all?d...=on|on here] I still use an inexpensive Aoyue rework station and separate soldering station. Are the temperatures always accurate? Probably not, but I use an external thermometer to verify. Same goes for my IR rework station and various other tools. So, I found a workaround to get my repairs to last. The importance is that those tools work for me, even so they may not work for you or anyone else. My advise, find the tools that work for you. Whatever brand you choose, I would suggest a soldering station, hot air rework station, Hot tweezers and definitely a magnifying source (Microscope etc.). The parts you do not want to take shortcuts on are the solder, solder paste and good flux. Remember, I am just a hobbyist and do not make a living with that. You most likely will get a different answer from the "Pro's" on here. you cannot learn how to solder by watching youtube videos. You will have to go out there collect all kinds of old boards and practice, practice, practice.

The only way to know if your soldering worked, is when your board works again. You will need schematics, the ability to understand those, board layouts for those boards and at least a decent multimeter. This is just to get started to test boards for short circuits and failed components.