When repairing the drywall tape, users should do the following:
After removing as much od the old tape as possible, users should sand the area until it is smooth.
After the area is smooth, users should apply a thin layer of joint compound to the area.
This step requires a new piece of tape to be cut. It should be the length of the spot in question. Apply the tape directly to the sheet rock and then apply another round of compound. Sand the area until it is smooth.