add a 5v neon bulb to a pigtail and plug it into a fan connector. Unlike an led neon is not instant on, which gives an opportunity to visually monitor power loss. Then even a non technically apt person can witness the pattern if it exists.
or attach an amprope arm to your scope and read the wattage usage on the red, orange, yellow and blue wires. Added up they need to be less that 80% of the rated wattage output of the power supply to be within UL and NEC guidelines, or the power supply must be removed or disabled to stay within OSHA regulations. A simple call to your localities Fire Marshall or electrical inspector can then be made, who may then lock and chain the door, send all employees home until changes are made by a licensed, certified safety engineering firm. Of course this will lead your boss into thinking you're an anal retentive creep who needs to make a forced career change
all joking aside you can read the amp draw and convert to wattage or use the neon bulb trick. It does sound like you have a power browning issue.