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changed L7720 again and now it is working. i dont know exactly if it was just l7220 because i also changed U7701 again. Anyway i am sure that l7220 had continuity and there was 5V on both pins. Even if it was so may coil fail?
I remember a friend who I helped online few months ago.
He had a problem with trackpad movement on 820-2915 board.
18.5V is required to work and he changed all in the corresponding area.
ALL, except L5801; guess which was the problem...