Dometic DM2852 Not working on AC

Hi,

My Dometic DM2852 fridge is not working on 120VAC. I have an LP leak so I have not confirmed that the fridge is working on LP. I am waiting for my new regulator and pigtails to arrive.

Anyway, I have checked the following
1. 12V is OK the lower board. Fuse is good.
2. 120VAC is OK the lower board. Fuse is good.
3. Heater element is 42ohms. Appears in spec.
4. NO 120VAC at the heater element measured on the board.
4. The eyebrow board has a finicky GAS button. It sticks a little.
5. Measurements of the P1 connector when attached to the lower board show...
RED is ground
Orange is 12V
Black is 12V
Green is 12V

Does it make sense for the black and the green to both be at 12V? I expected the black to be 12V when selecting 120VAC and the green to be 12V when selecting LP.

Is there a way to bypass the eyebrow board to force 120VAC operation? For example, tie P1-3 (black) directly to 12V and check to see if the 120VAC appears at the heater element (the eyebrow board will be disconnected from the lower board while performing this test).

I am suspecting a bad lower board, but I want to confirm this before buying a new one.

Any help is appreciated. Thanks!
-Jeff