We have a Hotpoint Refrigerator made 1989, Model # CTX256LG. We have water dripping from the bottom of the control box (probably condensation) and settling on the shelf right below the box. We cannot seem to figure out the problem.

Couldn't find any information on this exact unit, but this excerpt from repairclinic.com might be what your problem is: ********************************** There's water dripping inside the refrigerator Self-defrosting refrigerators dispose of the water generated during the defrost cycle, usually via a tube or channel that directs the water to a pan at the bottom of the refrigerator. From the pan, the water normally evaporates. (See a more detailed explanation of this in the How Things Work section of our website). If the tube or channel is clogged or obstructed, the water backs up and leaks into the inside of the refrigerator compartment. Then the water builds up at the bottom, inside of the refrigerator. When the water has built up for a time it may spill out of the front of the door opening. To fix this problem, clear the drain tube or channel and allow the defrost water to flow down to the drain pan.
Here's the website- it has a lot of good information on refridgerator repair.
Good luck, and hope this helps.