a/c not working

[minituck04]

just came back from getting an a/c check cuz it only blows warm air and they said it was that my compressor wasnt getting any power. as soon as he gave it direct 12v it kicked on. anyone ever have this problem. also , where the hell is the expansion valve. said that might be it cuz when it was on it would freeze. said it may be blocked or somthing. any help would be greatly appriciated

 

[indowanksta88]

my dad had that problem with his camry couple years ago, all they had to do was recharge the air conditioning system and it worked liek new again