A few keys not working - faulty keyboard?

Hi,
A friend of mine (honest!) spilt a v.small amount of water on her keyboard on her 2.16ghz 17" MBP and decided to dry it out using a hair dryer.
One melted keyboard later and I was asked to replace her keyboard for her.
So having bought and fit a new keyboard, keys are not working and 1 is intermittant. These keys are: f10, f11, 0, - and p ([ is intermittant).
They are all grouped together near the top right of the keyboard.
Twice I have tried to ensure the keyboard ribbon cable is firmly in place and it seems to be. Is the new keyboard I bought likely to be faulty and there needs returning, or could this be some other problem.
Thanks in advance for all your thoughts!
Dominic

Did the new keyboard come with a new cable? You might want to carefully examine the cable under strong magnification and look for any breaks that might correspond to the keys that are not working or not working properly.
Also, try an external keyboard. If you have the same situation on an external, there is some problem other than the replacement keyboard.
For future reference for your friend, you NEVER want to use a hair drier on a water spill. The best thing to do is to turn the Mac off, remove the battery, and lay it keyboard down on a towel for several days. You want all the water to drain out and any internal residue to dry completely before putting power to the machine again. Most of the time, the water will dry and everything will work again.
The forced air from the hair drier could have blown water deeper into the machine and there could be some residue causing problems. When you take the machine apart to check the cable, also check for any remaining moisture that could still be causing problems. If the machine had not been allowed to dry for several days, it needs to.
Good luck!

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A few keys not working - faulty keyboard?

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