Hi All,
New to forum and to LR's. Defender 110 question.
Truck has all the original AC components. Something I know little about except mine does not blow cold. System has been flushed and filled 3 times, no luck.

SO, If I was going to start replace AC components in the hopes of getting cold air inside where should I start? Which components would you suggest are the most likely culprit?
My mechanic kind of left me on my own. So the learning begins.
Any thoughts appreciated.
Steve