Just for info, an EQUIP COOLING fan OFF light does not necessarily indicate that the fan has stopped, ie an electrical problem. It merely indicates that there is no airflow downstream of the fan.
I have done dozens of (controlled) depressurisations in the 737 and on many of them the EQUIP COOLING - EXHAUST fan OFF light illuminates during this test. This is because of the reduced airflow in the depressurised condition. The flow (& OFF light) is always restored when the aircraft is re-pressurised.
The EQUIP COOLING fan OFF light does not necessarily indicate an electrical fault, but if other faults were observed a crew could be forgiven for making that assumption.