Recent content by Eversr007

Thanks will try. And what do you mean by new BIOS with clean ME?

sorry I checked their traces and continuity to U7400 and resistors measured good. I don't have any replacement parts on hand so trying to just troubleshoot and order parts. So when I first got my hands on it. The computer would chime and come on but would go from start screen to black...

I had .9 volts at for the cpu vcore. now I get .0 volts at L7510 and L7520. Wondering how the phases work on this circuit. At pin 1 on the Q7510 I get 12.57V which is PPVIN_S0_CPUIMVP Rail which is a G3 Hot rail. So what is best way to trouble shoot this circuit. Now sure how the phases...

In ohms mode measures 2.0 ohm on PPVCORE_S0_CPU where resistor R1360 would be but its a No Stuff pad.

Ok so I found that the PP1V05_S0 Rail is shorted to ground. It was measuring .9 volts and fan would still come on. But while testing now it is .00 volts and charger light is still green but dim. With the PPVCORE_S0 rail shorted is it safe to put power supply on 1 volt and try to find short or...

When I first got this Mac it sometimes had a chime and came on but it would cycle to black screen and them would display login screen. I shined a light on screen sometimes it would just be backlight not coming on, but the next time it would be no display at all. I didn't do anything to it...