You are not in an user serviceable item here so all the issues of getting the right board or part is, well, how to put this? You are going to use all your usual sources to find spare parts and boards. Sometimes you'll have to modify parts or change to another charger to fix the client's products.
Google LAPTOP JACK REPAIR and you see an entire industry devoted to fixing that. I'd contact those folk about this.
I am new. Dell was useless for a answer to my problem. I have inspiron 1545. My ac/dc charger (pa10) is find, the tip on the charger is round. The charger board power jack is broken and the jack is also round. Dell doesn't have the part,after 2 days. I found part on ebay and amazon, but with a octagon jack. I was told,my ac/dc charger tip would fit and work with the octagon charger board. I cannot locate a charger board with a round jack. Any help would be greatly appreciated. Thank you.