Oh there's high voltage if you get across the inverter for the CCFLs
Sounds like you have a dead "pixel line". This is typically not fixable, especially in smaller sets. It's just a bad panel (bad ribbon bond to the panel, bad panel itself, etc). Not usually repairable by the average Joe.
Sometimes (maybe 10% of the time) vertical lines are just a bad TCON connection. But horizontal lines are almost always not fixable in LCDs.