How to reset convergence? on mitsubishi ws 55511, has a shadow colored blue or yellow

There is an option in the user menu on the tv. Using either the remote or control panel on the front of the tv, press MENU then select SETUP. After you choose SETUP go to the 3rd column with the 3 icons. Here you can adjust the red or blue color or reset the convergence back to factory default.

After a few years the set will begin to show increasing problems with the convergence settings. When you can no longer adjust either red or blue horizontally or vertically an IC replacement will be needed. Your set uses (1) SANYO stk393-110 and you want to make sure it's SANYO and not a knock off brand as those usually fail prematurely.

If you have attempted to adjust convergence through the menu feature on you TV then may need to change the STK chips in your TV. Take a look at this video to see if you just need and adjustment or chip replacement.
www.youtube.com/watch?v=RGCEM5s5iCMThanks