Help Please ; Lenovo T510 - LCD Monitor turned yellow

[madhu]

Hello,
My monitor suddenly turned yellow in areas where it should actually be white. All other colors seem to be OK.
I did video / GPU tests (PC Doctor), it came out OK.
I did the solid color test , white is the ONLY color which is off.

Could you pls help me out on checking what is wrong

Screenshot
http://imgur.com/7gK2G3p

Edit for details :
if I see any video with lot of white - say Snow videos on youtube...They look good

[kitor]

Screenshot looks as supposed (white), so it's not a GPU issue.
T510 has LED backlight, so ccfls are not an issue. Try to boot into recovery mode or other operating system, also try external screen and see if the problem is still there.

[600X]

Displays age. Perhaps it's time for a calibration.

[rkawakami]

Sudden change in colors from one hue to another and back to normal again, could also be a loose connection in the LCD ribbon cable. Re-seat the connector on the motherboard and see if that helps; it should be fairly easy to get to. If problem still exists, re-seat the end behind the LCD panel (much harder to get to).

[madhu]

I used the laptop for an hour or so, and everything came back to normal.
Not sure what the issue

Thanks a lot for your suppport