where to buy 400V.AC 1.5uF + 2.5uF run capacitor? my old fan is not work from last weekend.i need replace it.

 

http://www.mcmaster.com/#motor-capacitors/=8s9wtg

http://www.grainger.com/Grainger/wwg/search.shtml?searchQuery=Capacitors&op=search&Ntt=Capacitors|Capacitors&N=0&sst=subset

And using the part number with google I get...

http://www.italfarad.com/menumotorieng.htm

Part is circled in red on picture.

Being a former Machine Maintenance tech comes in handy.