Sony KP-51HW40 51" Rear Projection Television "blue adjectives" Questions

...probem, the main convergence is ok, the problem is with the outer edges convergence, its the blue outer edge convergance that can't be adjected, the rights edge can be adjected, the top and ...

...but it still turn itself off I have a Sony KP-51HW40, 6 years old. It had the turned itself the blue screen and off problem before, I followed the instructions that I saw in the web to adject the ...