Try to work some better than scrap metal items

Well I got the little Frigidaire Refrigerator running. Took a lot longer because my guy is "lost in space" when it comes to electricity, defiantly not ready for "prime time". Showing him how to use a meter, we ohm ed and took voltage checks on every refrigerator component, when we had found both a bad heater and a bad thermostat. I believe the heater went out first, causing freezer to "ice up", so looks to me they kept using it. All hardware (terminal, screws, thermostat, evap. fan,) all had really bad corrosion. Now the light bulb quit working and it's just because corrosion. The timer advanced good manually and we cleaned the terminal on it and replaced the connectors on all wires. Read the thermostat out and open, as soon as we bypassed thermostat with jumpers it fired up. This would have been a walk in the park for me solo, trying to teach is another story. I had a heater from a old refrigerator we scrapped before, but no thermostat, going to see if we get one out of the other three.