The footage that starts the episode is Sentai footage. Hypno Owl is shown to be enlarging without the Satellasers.
All of the Hypno Owl footage is Sentai footage. All of the Astro Megazord stuff pre-opening credits is Sentai.
Footage of the evil Space Rangers as shown on the TV is when the new footage of them starts up.
Here's new footage of the evil Rangers and the good Rangers.
Here's a shot of the 2 Blue Rangers and the 2 Pink Rangers fighting.
Here's a shot of the Black Ranger fighting in the back while the evil Red Ranger takes out his Sword.
This shot of the Red Ranger is when the Sentai footage starts up. This shot is when it goes back to new footage because this shot is the floor of the Dark Fortress.
Here's footage of the 5 Psycho Rangers as shown on the Dark Fortress.  
This shot with the red lightning is when it goes back to Sentai footage.
Here's new footage of Psycho Black even though you just see the lower part of him.
Here's new footage of Psycho Black and Blue.
This shot of Psycho Yellow is when it goes back to Sentai footage.
This shot is when it goes back to new footage
These shots of Psychos Yellow and Pink is new footage.
Here's new footage of Psycho Yellow's Slingshot-like weapon.
Here's another new shot of Psycho Black.
The Megaship Screening footage of the Old Library as shown here is new footage.
This shot of Psycho Red is when it goes back to Sentai footage.
This shot is when the footage goes back to new footage.
The following shot is when he summons the Spiral Saber in new footage as shown here.
This shot of the Rangers is when it goes back to Sentai footage.
As soon as Zhane appears in the same shot as the damaged Rangers, it's new footage but that should be obvous.

For more Hypno Owl info, check out Megaranger Episode 15 and for more info regarding the footage that the Psycho footage came from, check out Mega 38.