Depends on the Serial Number...
LG has been struggling with moisture contamination/damage in their refrigerators for some years now.
As of this posting---it *appears* that they're finally getting a handle on it.
For the LRSC26925 models---if the Serial Number is:
603MRXXX through 812MRXXX (Mar 2006 - December 2008)...
The MAIN BOARD was changed from (6871JB1929Y) to the revised/corrected part number (EBR58010501).
This corrected *overcooling* complaints.
LG servicers were also instructed to visually inspect the THERMISTORs in both---the Freezer and Refrigerator compartments---for "partially-buried" Thermistors (inside the blow-injected foam insulation).
Any Thermistor found "stuck" in the cured insulation---is to be pulled out and re-attached to the Thermistor Case/Cover (for accurate temperature sensing).
If the Serial Number is:
906MRxxx or older...
Both Door Gaskets were re-designed---to improve sealing (moisture control).
Freezer Door Gasket (4987JJ1010L)
Refrigerator Door Gasket (4987JJ1010M)
In your particular case---the Evaporator Fan Motor likely failed due to moisture contamination---shorting out the tiny intergrated-circuit inside the Fan Motor Housing.
Which then---damaged the Main Board.
Evaporator/Freezer Fan Motor (4681JB1029A)
Main Board (EBR58010501)
Other possibles---though less likely...
Damaged wiring in freezer door hinge (top of door)
Failing/failed Door Switch