What is the quickest way to defrost a freezer?

You can try blowing warm air , using a hairdryer into the supply air vent ..

That may due the trick . If that doesn't work , you are doing a full manual defrost with food removed and door left open for 4-8 hours .

We used to take the food out and set pans of boiling water inside. And I believe we may have combined that with using a hair dryer.

dynamite

Defrost sprays

Boiling water

Take food out. Splash warm water in. Dry out.

Blegh chuck the whole thing out and upgrade

Use a hairdryer ⚡💥

Chisel it

Set up a fan to blow air in and get that circulation