First of all, welcome to the forum!
Did you still get the power beep when started to dig on 5V_G3S?
Resistance to ground must be checked when board is cooled down.
We normally use diode mode; switch to ohm scale only for very low values.
Did you check removing L8504 and U8500?
Missing internal/external video at same time, points to CPU graphics issue.
Did you still get the power beep when started to dig on 5V_G3S?
Resistance to ground must be checked when board is cooled down.
We normally use diode mode; switch to ohm scale only for very low values.
Did you check removing L8504 and U8500?
Missing internal/external video at same time, points to CPU graphics issue.