Ok, I'm attaching the schematics below.
On the main control board in the back of your refrigerator you can check for DC VOLTS across J14-6 to J14-7 (WHILE THE FRESH FOOD DOOR IS OPEN), that's the DC VOLTS that go to the FRESH FOOD LED lights.
Here's the main control board for your model:
This is a refrigerator main control board, which manages various components of the refrigerator, including the compressor and fans. If the board fails, the refrigerator will not be able to maintain the correct temperature.If multiple components in the refrigerator do not appear to be working...
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And for the FREEZER LED lights on the door board check for 3 VOLTS DC at J3-3 to J3-5 (WHILE THE FREEZER DOOR IS OPEN). The door board is at the top of the freezer door, under its cover.
Here's the door board for your model:
Refrigerator door board WR55X36965 / AP7012743 made by GE
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Jake