Amazon Affiliates Links

Klein Tools CL800 Digital Clamp Meter, Autoranging TRMS, AC/DC Volt/Current, LoZ, Continuity, Frequency, Capacitance, NCVT, Temp, More 1000V https://a.co/d/1xecSZN

Klein Tools IR1 Infrared Thermometer, Digital Laser Gun is NonContact Thermometer with a Temperature Range 4 to 752Degree Fahrenheit https://a.co/d/0w9pO5W

Fluke 115 Digital Multimeter, Measures AC/DC Voltage To 600 V and AC/DC Current to 10 A, Measures Resistance, Continuity, Frequency, and Capacitance, Includes Holster and Silicone Test Lead Set https://a.co/d/djh1qyN

Supco EM60 DualChannel Differential Digital Thermocouple Thermometer with Probes, 200 to 1300 Degrees C, 328 to 2372 Degrees F, Accuracy of + or 0.1% of reading + 0.7 Degree C https://a.co/d/bg4guWf

Do not attempt if you are not comfortable with high voltage or working around capacitors.
A customer came in and said his AC was blowing but he didn’t hear the compressor come on. So I thought this would be a good opportunity to run through diagnosing this circuit. So here’s a quick run through.