When I pull my light switch the light comes on maybe 50 times in a row but then the light flicks and all power to fan and light are gone. If I tap on the housing the light may turn on and fan starts back up. If I disconnect the light the fan switch never has any killing effect. I replaced the light fixture components and worked great for maybe 1 week and started back killing power to unit. Could this be the 2 wire capacitor not have enough pwr when both are connected. Replaced 4 wire cap last yr thinking it was problem. Problem for past couple yrs. Light is wired correctly. Thanks for any help.