using laptops with potential waterdamage without opening them at least to check is way more dangerous than opening it, especially if you bring it into professional repairshop. [br]
since you are writing on a website which is intended to help people with understanding the process and fixing some issues themselves it is not really clear, why are you expecting people to see through walls and tell you whether your laptop took some waterdamage or not.
in my experience, most people who had liquid spill on the device start shaking it off, which woiuld mean that any drop of liquid inside will spread and has a chance landing anywhere in the device.