Have an 820-00840 for no power no liquid whatsoever no signs of drop damage either. When I first got it in, it had no PP3v3_G3H. Was missing enable so replaced U7000 and PP3v3_G3H came back but no 20 volts on DC-in. Replaced both CD3215's, and now, this one is weird. It will show 5 volts on DC in for about 10 seconds or so on both ports, then it will shoot up to 20 volts at 0.00 amps. PPBUS is not present. DC in is a steady 20 volts and PP3v3_G3H is a steady 3.4 volts. Any ideas where to begin? PPBUS is for sure missing and not shorted to ground. I seem to have 5 volts on my TBA VDD pins and current sense resistor are not blown. Have tried 2 ISL9239 chips so far.
Something I did notice too when this first came in was that when I would open the lid on the device, the fans would ramp up really quickly then shut off. With the battery connected, the device at first would give fan spin and then nothing when testing. That makes me suspect of an SMC or sensor issue as well.
Something I did notice too when this first came in was that when I would open the lid on the device, the fans would ramp up really quickly then shut off. With the battery connected, the device at first would give fan spin and then nothing when testing. That makes me suspect of an SMC or sensor issue as well.
