Macbook air with liquid damage, did a board cleaning and device powered back on. Now a couple month later it doesn't power up.

While trying to reset smc I notice there are no change to the charger indicator light. I suspect the power button has failed. I'm looking to jumpstart the macbook air to validate that, and if so, change the keyboard assembly.

I know Macboks usually have a couple power pads that can be bridged to power it up.

Does anyone know where they are?

thanks