Dispatched our commercial refrigeration technician to a customer on Ming Avenue in Bakersfield CA. Their freezer was spiking at 32 degrees. Upon arrival our tech found ice blocking the coil, but not over the coil. Defrosted system, checked pressures. Performed a leak check `and found a leak on the liquid line going to the evaporator. Recommend replacing the liquid and suction line driers, as well as filter drier. Was able to source parts same day and repair. Recharged system and confirmed it was operational once again.