Some keys on the MacBook air don't work

[xdarkdragonx01]

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I got a used MacBook air on eBay and I noticed the some keys on the keyboard don't work as intended.

For example, the '1' key does not work at all, the 'p' key would increase the volume, the 'delete' key would enable capslock.

I've tried to do a clean install of Mac OS X but it would still do the same thing.

Is my logic board broken?
What else can I try to make sure that the keyboard is the problem and not the software?

 

[old-wiz]

I suspect the keyboard has been damaged or there's been a liquid spill.

 

[Young Spade]

Sounds like someone spilled something on the keyboard; I did that with an old keyboard once and certain keys would not work along with others entering random commands.

I would call up apple and see how much it is to get it fixed :/