Water damage, won't turn on Charging light goes from green to orange

I put my Macbook in a backback with a partially unscrewed water bottle and it got some (probably large) amount of water damage.

When I discovered this I panicked and tried to turn the Mac on. The screen turned on for a split second and then went black. Pushing the power button does nothing.

I left it alone for a number of weeks and it still won't turn on. Now when I plug in the charger, the charging light starts off green, and then after a few seconds turns and stays orange (it still won't turn on).

Does this behavior seem to suggest that the problem is with the MagSafe board or something else easy to replace (As opposed to the much more expensive logic board)?