mrtinb wrote:I'm trying to desolder the edge-connector. (Desoldering the edge-connector is not easy)
Do you have an electric hot air gun (the type sold in DIY stores for stripping paint)?
If you are careful, you can use a metal vice or similar to hold the PCB vertically, then gently warm up the solder side using the hot air gun. Sweep from one end of the connector to the other, back and fourth. As soon as you see the solder start to melt, use a pair of pliers to gently pull the edge connector (hold the middle). Continue moving the hot air gun to apply heat to all the solder joints. Very soon the whole edge-connector will come free.
As long as you don't hold the hot air gun in one place for too long, the PCB will not be damaged.
I have done this a number of times now, either to desolder a large DIL chip, or to recover edge connectors from old computer boards.
Mark