Sam, I am hoping these links will help answer your question, you could also try a search for (definite method to check a for bad capacitor in the circuit). Check the attached links,instruction and guides, Good luck.
I hope this helped you out, if so let me know by pressing the helpful button.
http://www.learningaboutelectronics.com/Articles/How-to-test-a-capacitor
https://www.youtube.com/watch?v=ce30CCLigX0
http://en-us.fluke.com/training/training-library/test-tools/digital-multimeters/how-to-measure-capacitance-with-a-digital-multimeter.html