|In short - NO.|
An IDE controller is a chip with MANY legs soldered onto the motherboard. If soldering a 3-pin DC jack to a motherboard was bad, de-soldering the original chip and re-soldering would be catastrophic. However, since both are dead, that would make a great opportunity to practice - nobody becomes good at de/soldering without practice.
Why don't you elaborate on what's going on with your DC jack and what the detailed results are?
Hints for repairing DC jacks:
-Use a proper soldering iron, ESD-safe with temperature control - do NOT use the $15 ones from Radio Shack; they get too hot and cool off too fast, creating cold solder joints and damaging components.
-Use braided wick to get rid of old solder first; this will let the old jack pop right out.
-Avoid holding solder gun for more than 3-5 seconds on one pin or else it'll damage other components on the motherboard.