Marshall for Model Number RF28HDEDBSR/AA My refrigerator stopped cooling. I replaced the main pcb and inverter pcb. It cooled and made ice fine, but now the LED display and control panel is inoperative except for the small led lights in the door, which stay on all the time. I am unable to switch from ice to water service, or any other function. What to do?
Answer Marshall, the main control will need to be tested at connection CN50 for DC voltage. With the black probe of a meter at pin 6, the red probe would go to pin 3 and should measure 12VDC, then red to pin 4 to measure 5VDC. If the voltage is not present or low, then the main control has failed and would need to be replaced (the REV number of your model will be necessary to ensure the correct control is replaced). If the voltage is present and correct, then the issue would be with the display assembly (REV number necessary to ensure the correct board is replaced). Read More... Answered by AppliancePartsPros.com | Monday, November 4, 2019