@lhinderberger Maybe the tip of the soldering iron does not touch enough of the unmelted solder to be able to transfer enough heat? You may get a better connection between the iron and the unmelted solder by melting some fresh solder on the tip of your iron first. (Just a guess, I am by no means a pro at soldering.)
@nause_marc Yep, that was part of the solution. Thanks for the advice! 👍🙂
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