HELP! I have copper pipe soldered joint that is leaking. Do I need to replace or can I resolder? Thanks, Pat

Close the water supply and drain all water from this pipe. Clean the joint with emery clothand apply flux. Heat the joint and add some more solder, it may work for you. If not, then disassemble the joint and clean the pipe, I usually just get a new conncetor since they are a pain to try to recycle.