If this happens heck the following:
- make sure jug is in place on the unit correctly;
- If the blade assembly had red tabs ( units BL704/BL705 ) make sure the red tabs are pushed out to lock it in place. Also check the base is tight in the glass;
- always make sure the lid is secure and in place especially if the unit has the interlock system. ( DBL650 );
- also check the jug is in place if it has the interlock system ( DBL650)
