What was found
(CAN) IN FLIGHT, DURING DESCENT FL 190, GEN 2 OFF CTU MSG THEREAFTER GENT 1 OFF CTN MSG. ADG DEPLOYED AND POWER WAS RESTORED BY APU GEN. TROUBLESHOOTING FOUND A LOOSE CONNECTOR, J201 AT FS280, IN THE ELECTRICAL SYS. A CHECK OF THE POWER SUPPLY REVEALED THAT MOVING/SHAKING THIS CONNECTOR RESULTED IN AN OPEN CIRCUIT AND GENERATOR 2 GOING OFF-LINE. THE REASON FOR GENERATOR 1 GOING OFF-LINE IS UNDER INVESTIGATION.