I got home from a long weekend to find that my refrigerator has stopped working. It was room temperature including the freezer compartment. I located the defrost timer and manipulated it into defrost cycle then back to a cooling cycle and still no cooling. I took the cardboard cover from the compressor and fan and can not hear the compressor coming on nor feel any heat from it. Is there a switch or capasitor somewhere that might be the problem? HELP??