I have a brand new 1day old 60inch sharp aquos led tv since we hooked it up it has had a faint greenish line going vertically right in the middle of the screen. nothing makes it go away. do you know what it may be, because we might be taking it back anyway.

New screen NEC.

If pixels are gone on all channels - Exchange it
Can't fix it yourself unless you are tv technician
It is quite common for few pixels to be dead but that is usualy not noticable

Tries take out the signal reconnected,Still happen,might need to change the backlight video board.

REPLACED LCD PANEL
Manufacturer Sharp Part Number RF-R1LK420D3LF2 Description 42" WIDE LCD PNL -

first make sure it does not come from the signal. If its really from the tv and look like a darker line it can come from the lcd control unit but most of the time its a dfective lcd panel

Burnt out pixel line. Usually the panel needs replacing

I too had a black line horizontally across the screen (on a 52" d62). It was brand new and was as if the screen had been "pinched" at the end of the line and it radiated outward (in my case, the "pinch" was at the extreme left and line went out to the right, like a crack).

Mine was a factory defect (right out of the box) and was replaced (2 yr now and no issues). This line of yours may have been there from the start and maybe you just didn't notice it?? Not a slam, just an observation.

Sounds like it could be pixel problems or board problems, this depend on the location. Most are mostly to the left or right, or going across the set to the upper or more to the lower side. For more info visit ctechnicians.com

Thin white dashes on top of screen is PERFECTLY NORMAL. It is nothing wrong with the TV, it is the broadcast. What you are seeing is the very bottom of the timecode running. It doesn't happen all of the time or all channels. It usually happens with old 4:3 commercials predating "Digital TV." This is mentioned in your Users Manual. You should be able to adjust the horizontal/vertical position in the menu settings.