How to resolder a cold solder connection?
What the other say is true but I wanted to add, those pictures of the
'good' soldering job is substandard soldering. After cleaning off the
old solder with a solder sucker and/or wick, the old flux should be
removed and again after the new soldering.
** What for ?
Solder flux is normally harmless and routinely left behind by many
manufacturers.
..... Phil
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