Sometimes it may be years before it finally lose contact, other times only months pass. In this instance the laptop was a couple of years old before it failed.
How to fix it:
Clean contact area
Solder back onto clean surfaces.
Click picture to see larger image
Shows another failed NO Charge issue. FL1 cannot handel the surge when plugged in and eventually arcs then lose contact with the solder pad. In this case if you cannot find a replacement, you can simply turn the coil [FL1] upside-down, and make sure you have positive voltage on the circuit. Try to test pad contact area and not just the coil. If you check the coil only, sometimes you may not have contact to the pad, which is the original problem. The silver dots on the motherboard in a circuit are test points. The white dots are only Pin 1 indicators or orientation markers. In picture 2 voltage was checked at pins 1,2,3 to see if voltage reached the MOSFET. This FET sends power to the RUN circuit.
If you wiggle the jack with the adapter plugged in and the lights come on briefly it is a failed POS circuit. [Top side]
If you get no lights or anything with adapter plugged in- it is usually a failed negative circuit. [Typically bottom side]