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Values = diode mode L7220 = 0.004-5 L7210 = 0.004-5 L7410 = 0.004-5 L7420 = 0.004-5 L7430 = 0.004-5 L7270 = 0.022 L8102 = 0.120 L7702 = 0.110 L8100 = 0.200 LB700 = 0.495 L7600 = 0.390 L7660 = 0.410 L7030 = 0.495 L8410 = 0.850 L3500 = 0.380 L7220, L7210, L7410, L7420, L7430 .. I assume they are...

All 4 ports same behavior. I noticed that PP5V_G3S isnt stable. Note: I tried already T2 restore/review no success always ends with an error.

Hi, every had such a strange behaviour on an A1989?

Hi, I have successfully changed the U7800 ... sadly the device is still acting weird. Why does it keep restarting? Any idea? Video:

Yeah I will try that.

Already tried that, same AC2 error message.

Doesn’t work. Edit: The USB-C voltage meter screen is only turning on/off when I have the cable for DFU mode restore connected to my MacBook (AC2). Any idea?

Yeah same behavior on all four ports. How to do a SMC bypass on a T2 board?

yeah it’s an OEM one. The USB-C adapter screen is just flashing (on / off) …. And no G3S voltages. Edit: What is that noise? (Last couple of seconds of the video) It occurred after the USB-C went off.

I assume you mean "L7660" and "L7600". L7660 (PP3V3_G3H) = 3.3V (stable) L7600 (PP5V_G3S) = 1.3 - 5.1V (not stable) Edit: P5VG3S_EN is also pulsing (0-3.3V) .. so thats possible the reason why PP5V_G3S isnt stable. Source of P5VG3S_EN is U7800? (Bad U7800?)

Yes. Values = diode mode L7220 = 0.004-5 L7210 = 0.004-5 L7410 = 0.004-5 L7420 = 0.004-5 L7430 = 0.004-5 L7270 = 0.022 L8102 = 0.120 L7702 = 0.110 L8100 = 0.200 LB700 = 0.495 L7600 = 0.390 L7660 = 0.410 L7030 = 0.495 L8410 = 0.850 L3500 = 0.380 L7220, L7210, L7410, L7420, L7430 .. I assume...

I have tested it again restoring BridgeOS while the logicboard is in the housing …. All four ports are doing when the battery is connected … Note: Issue only occurs when the battery is connected. Edit: - With battery ... PPBUS = 11V (stable) - USB-C output issue - Without ... 12.57V (not...

that sucks … already the third MacBook with a T2 or SSD issue. Edit: Is it normal that in DFU mode that the usb c output goes up to 20V? Edit2: The battery is also not charging correctly which means the current goes up to "0.15A, 0.35A, 0.55A and 0.70A" and than it gets reseted to 0.00A...

Yes both.

What else should I check? Edit: I mean it’s the same behavior in the AC2 before and after the short (made by me).

So I have replaced the ISL .... im now getting 12.57V (PPBUS_G3H) again. (so yeah I fucked with that short my ISL - was kinda stupid :D) But here we go... PP1V8_G3S = 1.8V PP3V3_G3S = 3.3V I2C_SSD_SCL = 0.7V I2C_SSD_SDA = 1.8V Note: - Trackpad is clicking - In DFU mode PPBUS_G3H is 12.25V is...

I have accidentally shorted C7080 (PIN1 = PP1V8_SLPS2R) and C7021 (PIN1 = CHGR_CSI_P) with my multimeter tip ..... No short on PP1V8_SLPS2R or CHGR_CSI_P but now I only get 5.02V and 0.05A on all four USB-C ports .... Comparing the PP1V8_SLPS2R diode value to a good known board is the same...

I have checked the SLPS2R + AWAKE (all present). PP1V2_AWAKE = 1.2V PP1V8_AWAKE = 1.8V PP3V3_AWAKE = 3.3V PPVDDCPUSRAM_AWAKE = 0.8V PPVDDCPU_AWAKE = 0.75V PP0V8_SLPS2R = 0.8V PP1V1_SLPS2R = 1.1V PP1V8_SLPS2R = 1.8V PPBUS_G3H = 12.57V (should be fine) USB-C Output = 19.4V / 0.04A (DFU Mode -...

Hi, PPBUS_G3H is looping between 12.25 and 12.57V on an A1989 (820-00850). Also the output of the USB-C ports are weird. - 19.4V - 0.00-0.04A I assume the CD3215s are fine because I get 20V, right? What should I check next?

it’s the underside of the CPU, where should I get the schematics/boardview?