It is hard to follow your question....however; if the sprayer turns on and the paint fails to enter the nozzle, you may have a blockage. Take the spray nozzle apart and run hot water over it to clean it out. You may need a small brush or cu-tip to clean the inside of the barrel. Blow though it and see if air passes easily. reassemble and run as you normally do. Be certain the top is attached to the paint reserve tightly and securely. Any air leaks will prevent the sprayer from building up pressure within and thus no spay will be emitted.