There is sound but there isn't video. On 3rd and 4th legs of J9000, there were short circuits, I cleaned them and made another path. On 4th leg there is 3.3 volts but there isn't any on 2nd & 3rd. So, I backtracked and checked U9000. On its 2nd & 3rd legs, there are 3.3 volts but there is no voltage on lcd_pwr_en. On the same path there is no voltage on first leg of R9678. In this case, should I replace U9000?