Phillip S Medon , TN April 13, 2015 Appliance: Whirlpool Range RF388LXKT0 Whirlpool Range Rf388lxkt0: Rf388lxkt0 control panel intermittently blanks out. How to replace Power Supply, Pca. Checked the connector and there was a cold solder connection on the power supply board. Replaced power supply board. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes