Hi, I have a MacBook which I purchased new in Oct 2008. About 3 months ago I spilled some tea on it. I let it dry for 3-4 days and then turned it back on and everything worked until last week. Now when I turn it on I just get blue lines on the screen. It works fine however if I attach it to a monitor. I brought it to the shop and then said that I need a new logic board due to the water damage. I asked why it worked with a monitor and they said it was the video card. I asked why I monitor would not require a video card and they said it is the part of the video card that attaches to my computer's display. They said it will be $2000 (Canadian) to fix it. Does this sound like a reasonable diagnosis or do you think they just saw that it was in contact with liquid so they say I need a new logic board? Thanks in advance.