Mark M Prestonsburg , KY March 25, 2020 Appliance: Kenmore Refrigerator 79577562600 Kenmore Refrigerator 79577562600: Lights staying on when doors were closed. How to replace Lg Lt600p Refrigerator Water Filter. Known problem with previous recall back in 2015.... recommended fix was to replace the control board. This is the action taken, to replace the control board. The video outlining the steps in replacing the control board was extremely helpful, which allowed me to install the control board myself rather than hiring an outside technician. What I thought would require a trained electrician was something that was extremely easy to complete myself. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes