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C5409 SMC_CPU_HI_ISENSE = 30MV C5680 SMC_CPU_VSENSE = 0.5-0.9 BOOSTING C5605 SMC_CPU_ISENSE = 0V C5615 SMC_GT_ISENSE = 135MV C5682 SMC_GT_VSENSE = 0MV C5691 SMC_SA_IMON_ISENSE = 359MV C5631 SMC_SA_ISENSE = 0MV C5523 SNC_3V3S5_ISENSE = 0.5V C5518 SMC_3V3SSD_ISENSE = 0MV C5690 -...

I'm struggling to be able to accurately check them.. They are all on the opposite side of the board. I need about 6 pairs of hands :(

so its all the vsense isense outputs I'm checking right?

AVREF_SMC is 2.98v

SMC bypass doesnt seem to work either now. Fan spins full for about 2 seconds but nothing more and no screen.

When it cuts power, the DCIN drops to 5.2v 0.02a

It turns itself off after a few seconds. Gets into the OS but thats about it before the power cuts off

I lied.. it just did smc bypass and started

Hi 2informaticos.. holding down the power for smc bypass doesn't seem to do anything different

Hi, I have a 00875 thats had liquid damage over the U7650 side of the board. After going through the UC, the laptop started from the battery and got into the OS but I walked away and came back to it turned off. Not sure if the battery is drained or something else. I don't have a spare battery...

Ultrasonic clean and an SMC reflow did the trick. Tested for a couple of days without the problem returning. Thank you for the help

Sorry, thought I was just looking for damaged traces, liquid etc.. U6901 Pin 1/2 SMC_BC_ACOK = 0v, Pin 3 GND = 0.0v, Pin 4 SMC_BC_ACOK = 0.0v, Pin 5 PP3V42_G3H = 3.452v I'll check voltages on U6900 now too

2informaticos Changing the DCIN didn't make any differences. Checked around U6900/01 under the microscope and it all looks perfect unfortunately. Just to be clear. When PPBUS_G3H is below 11.84v (usually around 11-11.4v when just on battery) the magsafe light doesn't come on and the battery...

JohnB8812 Exact voltage on PPBUS_G3H with the battery removed, just 85w charger and the MacBook turned both off and on is 12.48v-12.49v On ISL6259 (U7000) resistance between 17/18 is 2.8 - between 27/28 is 20 ohms which both seem fine I think. 2informaticos I'm checking U6900/U6901 now for...

I have an 820-3115-B with a intermittent fault. It always turns on with a charged battery but doesn't always charge the battery. When it doesn't charge, theres no green or orange light. When it does charge, it shows orange light as normal. I've noticed that if its in a charging kind of mood...

Yeah. No life but a board LED in both cases

Do I need the battery connected for SMC bypass or does it not matter on these?

Nothing from this board when I try to bypass SMC

SMC bypass on these... is that with the board back in and battery connected or without the battery? Hold power button for 10 seconds and keep holding for another 10 seconds while plugging in the power lead right?

Could be. I was told that the boyfriend hit the screen. I still don't understand what it is telling me by pulsing