Pioneer sd-582hd5

I have trouble with this big screen:
- unit is shuting down when apply the signal in the screen.
- will not adjust the convergeance perfectly in wide screen mode.
I've already replaced 2 convergeance ICs. Resoldered Hight Voltage Board and checked all components on this board are good. Also checked the power supply board too.
The trouble is still here.
Please help,
an give me some tips.
Thank you,