Inverter and linear compressors Refrigerators
Many LG refrigerators use an inverter or linear compressor, which speeds up and slows down instead of simply switching on and off. That makes them quiet and efficient, but it also means a cooling problem can be the compressor, the board that drives it, or something simpler like a fan or frost on the coil.
Colby rules out the simple causes first, then tests the compressor and its control before naming either one.
