White Rodgers Controller Wont Turn On

So my water heater quit working. The controller will not light up. It is a 37E73A301P1 unit. On the circuit diagram, for the gas valve connector it shows blue and black wires as the voltage supply. There is 120V across them, so its getting power. Also, I think the temperature switch is prior to this.

My question is, if its not lighting up is there anything else to check aside from the board being fried? And if not, are different brands universal? Like:

Rheem SP14905A

Thanks for any help you can provide.


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