Lines on upper left corner, inside of screen

It appears that the bondings on the plasma panel are giving way. The problem will increase with time and if I am not wrong, you will have to bear with it or change the tv.

Try the RETURN button on the remote to get back to viewing.
Get the manual at Sony KDL 40S2010 Manuals See page 11 for remote control keys and page 38 for further trouble shooting if necessary

are the lines going left to right or up or down? if up or down probaly a bad panel,iff left or right either the upper or lower buffer board is bad

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to CRT screen are given with illustrations. You can get an idea about the fault to an extent.

Retrace lines. This fault is called so. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to CRT screen are given with illustrations. You can get an idea about the fault to an extent.

Try a new t-con board

When I got my new LCD big screen, it had a black line across the entire width. It looked like the screen was pinched.

They claim that it can be repaired but that repair costs as much as a new tv.

My tv was replaced. Hopefully your warranty is still in place to get the unit replaced.

use the gray bar on top to move the screen to the upper left hand corner.  Then click and drag the bottom right portion of the screen to the size that you want it be.

Beyond repair I would imagine - these thing cannot usuaslly be repaired in these circumstances.

yes there is a small black box with 6 controls on it, take off the bottom front of the tv, behind that you should find a black piece of plastic you can remove by taking out 2 more screws. the black box should be in the upper rhs.now i don't remember if the top 3 are the screen controls or the focus controls. the rows should be labled, you are looking for the screen control row. the green control is the middle one. you can try turning down the control till you no longer see the green lines. try adjusting in a dark room, it will be easier to see the lines & when they are gone. if you problem is not solved by trying this, then i agree with your tech & the green tube is bad. good luck.