Fridge needs 12V DC power to function....electric or gas
No 12V DC....no workie-------it will not turn on.
First thing..make sure the DC Fuse for fridge (on DC Distribution Panel) is good.
Then unplug DC +/- wires on lower power board and test that you get 12V DC power.
IF you have DC power to fridge then need to check the DC fuse(s) on lower power board.
On the lower power board in outside compartment are some fuses.
3A automotive blade type for DC Power (could be Two 3A OR could even be one 5A----depends on serial number of fridge. Your 2004 probably has one 3A)
There is also a 5A fuse (round glass AGC type). It is for AC Power for heating element.
In order to remove cover on power board three screws hold cover on and you need to unplug AC, DC power, gas solenoid wires, spark sense electrode wire, divider heater wires.
TURN OFF AC (unplug cord) and DC POWER FIRST>>>>