This is the most critical section of the schematic for repairs. If the board is "dead" (no power), you must trace the power sequence. For the E93839, look for these stages:
The SIO chip (usually ) controls the power button and fan speeds. Check: Pin 3.3V Standby power. e93839 motherboard schematic updated
Often utilizes E93839 boards with the Intel LGA1155 socket. This is the most critical section of the