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My friends AC stop working and blows hot air. The fan wasnt blowing when the AC was on. I opened the panel and saw the run capacitor bulging out. The run capacitor stores up charge to kick start the compressor and fan. So, if thats broken, then may be thats why my fan isn't running. So, i bought one for on the internet and it fixed the problem
This is for documentation and reference only. I am not a professional.

Many asked where to buy a run start capacitor? Search "HVAC supply" in google maps and a local AC supply store sells it. Or go to online stores like Amazon. The following link goes to Amazon's capacitor section:
http://goo.gl/4Xgwb

How to replace a contactor: