I once had StepSticks from reprapworld which malfunctioned similarly. The solution was to heat them up sufficiently to allow the solder to reflow:
1. Remove the plastics of the connectors pins. You can pull off that stripe easily.
2. Hold the StepStick over a not too small burning candle. Flat, above the visible flame, components side up.
3. The connector pins will fall out pretty quickly. Lay them aside.
4. Heat until you can see the solder going glossy. Heat another 5 seconds. Likely, you can smell a bit burned PCB substrate (Epoxy).
5. Lay the StepStick aside to allow slow cooling.
6. After a few minutes, solder the connector pins back in.
Sometimes I do such adventerous repair attempts. My trash can doesn't bother wether I throw in partially or totally damaged stuff. This time it worked, for two StepSticks out of two tried. :)
1. Remove the plastics of the connectors pins. You can pull off that stripe easily.
2. Hold the StepStick over a not too small burning candle. Flat, above the visible flame, components side up.
3. The connector pins will fall out pretty quickly. Lay them aside.
4. Heat until you can see the solder going glossy. Heat another 5 seconds. Likely, you can smell a bit burned PCB substrate (Epoxy).
5. Lay the StepStick aside to allow slow cooling.
6. After a few minutes, solder the connector pins back in.
Sometimes I do such adventerous repair attempts. My trash can doesn't bother wether I throw in partially or totally damaged stuff. This time it worked, for two StepSticks out of two tried. :)
