I got some old PCBs that had pads which are Immersion gold.
I used one of this boards for a prototype where i needed to connect to a modules UART port directly with UART/USB dongle. I soldering a wire onto a AVR pad(empty pad), as these are connected to the module and i can connect the other end to the dongle.
While soldering the wire on the pad, the pad just detached from the PCB even though it was still connected to the track.
Is this normal occurrence as this is the first time i have experienced it?