I just completed my X0Xb0x but unfortunately it does not work. There is just a humming sound on the headphone. No LEDs light up, no reaction on turning/pressing switches. So far, I found out that there is only 1.29 Volts on pin 40 on the cpu. when I disconnect J3 from the mainboard there is 5Volts on PIN 3 and 4 of J3. Voltage on J4 is correct, even if J3 is connected to mainboard.
Any suggestions are appreciated.