if symptoms of damage such as: fridge not cold, no noise from the compressor, how to analysis and improvement:
1. Check the incoming voltage to the compressor, make sure there is voltage coming into the compressor, a simple way to hold the engine compressor. if there are hot that means the voltage has been entered. the part that does not work is the compressor. you should replace it and fill freon. you must have special equipment to be replaced, such as welding equipment, analyzer to check freon pressure and pressure compressor. and many more tools that should be necessary.
2. Thermostat how to replace it: simply replace the existing thermostat in the freezer space, there is a screw that must be opened, open by pulling the cover and then remove from the holder thermostat. replaced in accordance with the size and spec. there are only two wires are connected there, no matter if inverted in installing.
3. Timer: Timer can be damaged, causing the compressor does not work, the indication: there is no noise from the compressor. timer location near the compressor (in box) or in room fridge, usually near the refrigerator light. first try to turn the timer until the refrigerator running. if it still does not work just replace the timer.
4. check the fuse and the thermo bimetal (thermo switch) and the heater as a function of defrost in the refrigerator. these parts have anything to do with the function "timer", if one is not functioning will cause the refrigerator does not work normally even the refrigerator is not cold.