In Power Rangers there have been various occasions where Rangers lose their powers. A few that stick out is the Might Morphin' Rangers when their Zords are destroyed prior to the Ninja Quest episodes, the Turbo Rangers when the Power Chamber is destroyed when the Overdrive Rangers lose their powers.
In Mighty Morphin' it can be interpreted that the connection between the Power Coins and the Zords are the same. However one would expect the Grid to be destroyed after Zordon's death but it was not. Lastly in Operation Overdrive the Grid is depicted like the internal parts of a computer (which may be non-cannon compared it's physical depiction in Dino Thunder).
This leads me to the question: is it possible to completely destroy the Morphing Grid?