- Fan on!
- Look! It worked!
- Yay!

9 seconds sound clip from Scooby-Doo, Where Are You! - A Night of Fright Is No Delight (S1E16).

You can hear this line at 00:18:00.600 in the Blu-ray version of the episode.

Quote context

[...]

- Hey, how'd you get that green stuff on your hand?

- Dancing with those green ghosts. How else?

- That's it! Come on, everybody. To the laundry room.

- Raundry room?

- Like, I've seen some goofy traps before, but this is the goofiest.

- Not goofy, Shaggy. Simple.

- We use a fan, some soap suds on the floor, a spring-loaded ironing board, and a washing machine.

- And when those ghosts come through the door, we're going to take them to the cleaners.

- Now, let's see how it works. Ready, Scooby?

- Ready.

- Fan on!

- Look! It worked!

- Yay!

- Hee hee hee! Scooby-Doo!

- OK. Daph, Velma, and I will lure the ghosts through the doorway.

- When I yell now, you switch on the fan, Scoob.

- Right.

- I'm all set, too.

[...]