a/c not working need to know how to trouble shoot

[peanuttbutterman]

can someone either tell me the steps in fixing a a/c. atleast could someone direct me to a post with a walk through. i work on hvac amd own all the tools. please help its kinda hot.

 

[drdoom]

http://www.explorerforum.com/forums/showthread.php?t=192842