AC precision tune up. Clean and tune up AC; cleaned condenser coil, checked all outdoor electrical components, tested indoor air flow, checked refrigerant levels, and tested overall AC operation. Found major issues wrong with this system, first noticed burnt wiring coming from the motor starter going to the compressor. This could potentially short to ground and ground out the compressor. Also found the motor starter pitted from age. This could cause operation complications. Lastly found the system to have a rough start. This could be caused by internal failure of the compressor. All recommendations declined at this time. With age and condition of this system replacement is encouraged in near future.