My PS2 has got a strange problem. it cannot be booted using power/reset switch but can be booted if eject button is pressed. it is Fat model SCPH 5000X. I have checked the voltage on to the mother board and pin 5 of the power switch jack shows 0 volts. A person told me that it is due to power IC. I dont know what does it mean and abt what ic he was talking about ?