Hello. I got a 820-01700 in that had some minor liquid damage around the LCD connector. The LCD connector on the logic board is clean but the connector on the screen side is damaged. I replaced U9850 and replaced the LCD flex cable with a new one and tested the board with another full assembly that is good, but still nothing on the internal screen. No image or backlight. External image works fine though. I replaced U9850 one more time just in case, and still same issue. DP_INT_HPD is 0v and backlight output is also 0v, so it seems the LCD is not being detected by the board. I have correct voltage on the 3v and 5v rails for the screen. Could I possibly have an issue with U9801?