B737 Equipment Cooling
Framer, since the B737 does not carry a F/E, and therefore I have not operated on that type, I can only rely on Boeing providing an "Equipment Cooling Failure" annunciator to alert the crew to such a failure, so it follows that if the applicable control switch was moved to the "Normal" or "On" position and the cooling fan did not operate the annunciator would illuminate. My point is that that it is inappropriate to be "flicking" switches without noting that the appropriate reaction takes place when a switch position is changed.