AC repair. Started diagnostic at the outdoor unit after setting thermostat to cool ,,(unit still running with R22 refrigerant,,no longer made),,, visually inspected outdoor unit for debris/ dirty , notice the plunger of the contactor was pulled in , checked voltage coming to the unit, didn’t have any, proceeded to inspect the main breaker box , found main breaker tripped off, turned back on, as soon as we did it we heard a noise at the condenser,, found the compressor wires burned ( common/ run windings). We highly believe the compressor is shorted to ground,, recommended to replace the system instead of investing on a system that is on its way out ,,system is 21 years old.