I have a two year old Sears refrigerator with a freezer compartment on
the bottom. In the past couple of weeks the magnets holding the
freezer door closed are not longer effective; every time the
refrigerator door above it is shut the freezer swings open.

What are some possible causes of this? Is there an easy fix? I'd
rather not pay for a repairman to come to the house if it's a simple
problem.

TIA.