Hi,
Just open the back cover of the HDTV and look for the black plastic transformer with two red wires it is the plyback transformer there is two little knobs one for the screen and the other one is for the focus. Just adjust the focus knob either clock wise or counter clock wise its depends on what the effects in you pictures if nothing happens, then it is the convergence IC problem, need to replace.
Feel free to ask whatever the result.
Regards:
votit
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