A/C wont work on 2006 Scion xB

I just bought the car in October, used. The a/c stopped working. Nothing blows from the vents at all. The dealership replaced the resister in the dash and said that would fix it. It worked for a little while and now it doesn't work at all. Could there be something else wrong? Any suggestions?

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2 answers
The wiring connector to that resistor should be checked. It can overheat from the high current to the blower motor, and can melt or burn terminals.
Hope it's not your compressor, Toyota will hit you for $2000.00 just for the part.