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That is correct, this is the standard procedure to dry PCBAs.
That is correct, this is the standard procedure to dry PCBAs.
You lost your pad. This usually happens if you have old PCBs which were exposed to some air humidity over time. The pad heats up and the moisture evaporates between the layers, separating the pad and the PCB base material. More heat increases the likelihood of that happening.
That part is unsolderable now. You need to connect at a different place and reconnect any interrupted traces or glue the pad back to the board, if you can.
Game controllers in general are very hard to repair since they contain large copper layers to withstand forces from the controls. It’s very common to loose pads or lift THT holes.
That said, most often nothing is ever beyond repair. It’s usually just a matter of skills and tools which are available.
Not by default. It remembers the MAC for each specific network. This is because sometimes you want to have specific device on the same IP all the time. The DHCP decides this via the MAC.
If you want it truly randomised every time you need to turn on non persistent MAC randomisation in the developer option.