Continuity mistake: Up until Green No More in Series 2 (where the Green Ranger powers are destroyed), the Green Ranger's overshield constantly changes between solid-looking metal to flimsy-looking cotton. This is the most obvious difference between the Japanese and US footage.
Continuity mistake: When the Villains send their cronies (for example, Putties, Tengu Warriors, Cogs, Piranhatrons, etc.), their numbers constantly change from when they arrive, to when they leave. This is due to the use of Japanese footage used from Kyoryu Sentai Zyuranger.
Trivia: Jason David Frank, who played Tommy, left the show in the episode because his powers had been stolen by the Green Candle. However, he had become the most popular member of the Power Team, despite the original plan being just to temporarily have him on the show. Saban received large amounts of letters daily requesting Frank be brought back. The company eventually gave in and brought Frank back in the episode "Return of an Old Friend." He was returned to Green Ranger status in part 2.
Question: If all the villains have known the Rangers true identities, why didn't they just reveal them to the public? Zordon stated in the first episode they would lose their powers if their identity was revealed. It couldn't of been an "honour" thing, as they've all shown they are willing to use cheap tactics to get ahead.