I spilled sweet tea on my keyboard and now its glitching

I'm a relative novice regarding laptop repair. I've replaced heatsinks, batteries, and hard drives. I spilled sweet tea on my keyboard last week and I panicked. I wiped up the liquid on the surface of the keyboard and held it upside down for just a few moments, all the while it was on. It worked fine for the rest of he evening, but has been malfunctioning since. I let dry out for about 24 hours, but given that I'd already used the laptop, I believed that the damage was already done. The screen works fine, except for the bluetooth, which doesn't currently turn-on. The mousepad works fine. The keyboard however, is acting crazy. Some keys work fine, while others don't. Some keys I hit will produce seven other random letters. While others will repeat a sequence of letters without end. I'm using a usb keyboard to type this. I don't know what to do. It is under Microsoft's basic/standard warranty.

I believe any kind of repair is above my pay grade and I've grown to distrust local repair shops. I sense it may be better to sell it for as is, and just buy a new, or used one on Ebay. What do you think? Should I try to repair? Should I go to a local shop and trust they can fix it without charging me hundreds of hours in labor? Or, sell as is and just by another one.