Performed complementary panel inspection. Panel is in good standing. Also perform diagnosis of downstairs bonus room outlets and switch box found loose hot connection in switchbox powering TV outlet and outlet for treadmill. Advise customer that treadmill need a dedicated 20 amp circuit. Quoted for circuit. When I remade the loose connection in the switchbox all power was restored. Advise customer that treadmill Treadmill may continue to trip breaker.