The Temperature Control and Display on the door is blank. It was giving me error messages for quite sometime and would quit responding to attempts to reset the temp. After un-plugging and then re-powering the refrigerator the panel would start working again for a few days, maybe a week. After a few months of this it went black and has not responded to any attempts to reset it. The refrigerator is still working somewhat, but the refrigerator will sometimes freeze food, and the freezer will build up ice beneath the drawer that has to be manually removed. After researching in the forum I’m pretty sure it’s the control panel that needs to be replaced but I’m not sure which one. I’ve found a power control board assembly part# AP4652237, a “PCB Assembly Main” MFG Number 6871JB1423N, and a “PCB Assembly Display” MFG Number 6871JB1439A
Can someone tell me if my diagnosis is correct, and if so, which of these will I need?

Thanks in advance for any help!