The LG EBR83845040 Main PCB is the correct replacement for the following model numbers.
Pcb Assemblymain
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LFCS27596S
lfcs27596s-refrigerator-parts
LFCS27596S
lfcs27596s-refrigerator-parts
AGF80300704
lfcs27596s-refrigerator-water-filter
AGU75188619
lfcs27596s-refrigerator-flipper-assembly
MAN63948501
lfcs27596s-refrigerator-door-bin
MCR66806901