[SiriusHardware]

I have found in the past that the bonds / glue holding the tracks and pads onto old 'fibre glass' boards of this age aren't very heat tolerant and are easily overheated and cooked right off the board, plus it's very easy to brown or blister an area of the PCB by applying heat to one place for a little bit too long. I definitely would not recommend the use of a hot air wand to try to remove ICs on an old PCB like this, however, pre-warming - warming, not baking, the area to be worked on just before using a desoldering gun does help.