GrnRngr.com Mistake Guide -- Return of an Old Friend, Part II

Mistakes

Alpha 5 located the teen's parents and alerted the Rangers, despite Zordon locating them and reporting that they were fine in the previous episode. (01:09)
The Dragonzord in Battle Mode's arm was in frame as Dragonzord destroyed a building, but the Megazord wouldn't be summoned until the fight with Dramole much later. (03:02)
When Jason remarked, "It's working!" as Tommy's powers were being restored, his words didn't match his mouth. (03:36)
Green Ranger had a white (rather than black) holster on the wrong hip with a Blade Blaster in it. (03:40)
While Goldar was using the Dragon Dagger to control the Dragonzord, the box holding the Power Coins was lying on a podium near a waterfall outside Angel Grove; this shows that the dagger and box were not actually the same object although Goldar had morphed the dagger into the form of the box. (03:53)
The Green Ranger's Blade Blaster fell out in the middle of his fight with Goldar. (05:33)
In the middle of the fight with Dragonzord, Goldar realized that they'd left the Power Coins unguarded, and he and Scorpina vanished; the villains never returned to the Power Coins, however, leaving them unguarded and allowing Tommy to reclaim them. (07:47)
The Putties shifted position when Green Ranger teleported away after retrieving the box with the Power Coins. (08:14)
When Tommy regained consciousness, he somehow knew that the other Rangers were in trouble. (12:28)
The Megazord cockpit lacked the dinosaur symbol behind Red Ranger in one shot. (15:05)
To form the Dragonzord in Battle Mode, Jason called for the "Megadragonzord." (16:08)
Immediately before forming Ultrazord, the Rangers formed the Dragonzord in Battle Mode rather than the Megadragonzord. (16:22)
The Ultrazord blasts destroyed giant Dramole with a slice effect, as though from a sword. (16:40)