rpineau wrote:This is probably happening on pins connected to the ground plane. It takes a lot more heat to keep the tin melted on these pins as most of the heat get dissipated by the ground plane copper.
you can use a hot air gun at low heat and carefully heat up the section of the board where you want to solder. If the board (especially
the large ground planes) already has a temperature of ~50 degrees celsius it´t much easier to solder those ground pins.
Perhaps you can test the best temperature with an old defect board before you burn the Falcon
Cover the other parts of the board and don´t heat it too much!
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