Refrigerator

Frigidaire, 19 cu. ft. ? Unit cools but not as much as it should. condenser coil is clean, both evaporator and condenser fans are working, compressor starts and runs but only for a couple minutes before turning off. I replaced the capacitor but it made no difference. Some 1 that is familiar with repairing these units should be able to fix it. $50.00 cash. 936-556-1212