This is mostly power pack problem . check for bulge capacitors in the secondary side of your power , if non check vividly the reservoir capacitor of the primary side very well or even consider it change because it seems the power is not having sufficient capacity to power the load or output ,if ok then.Disconnect the output plugs of the power pack & read the output with your multi meter to check for 24v ,5v & 5.5v . if not ok check for defect component or you change the power pack