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Diode mode shows no differences. Test ASD stuck on CPU test. Hear a jammed chime during startup with trackpad flex.

R5370, R5371, R4800, R4801, R4803, R4804, R4808 are ok.

I can't run ASD with trackpad flex. I can't access boot menu. With the keyboard disconnected MacBook stuck on Apple logo.

I can't unless I take out the flex. I can try without

MacBook Pro A1398 stuck on Apple logo with trackpad flex. Replacing the trackpad and tape does not help. Only turns on without trackpad flex in the motherboard - J4800. I did a pram and SMC reset. Please help. PP5V_S5_CUMULUS - 5v PP3V3_TPAD_CONN 3v R4800 and R4808 are ok

I replaced and still the same

I replaced R7075 and is TBA_VDDP 5v but still won't turn on 3V3_S5 and SMC_PM_G2_EN not pulse, only 0v.

TBA_AUX_DET 1.26v TBA_VDDA 5v TBA_VDDP 0v SMC_RST_L 3.4 v AUX_OK, SMC_BC_ACOK 3.4v CHGR_BMON 0v CHGR_AMON 0v PPDCIN_G3H 5v

3V3_S5 and SMC_PM_G2_EN not pulse, only 0v. Still 20v only on battery.

nothing happens, SMC_ONOFF_L. drops to 0 and appears 3.4

I soldered the F7000 / 1. With battery i have 20v but PPBUS_G3H with battery 11.56 v PPBUS_G3H without battery 0.05 v SMC_ONOFF_L 3.4v

Sorry. I misunderstood you and replaced the F7000 / 1. Without F7000 / 1 it is 0.01v on C7050

I don't understand it but after replacing it, once is 0.1v and sometimes around 0.02v. regardless of the usb-c connector.

Yes, but I still don't PPBUS_G3H - 0.1v

UB090 and component are ok. I saw that the UB300 was warming up and replaced it. Now I have 1.1v on all CD3115 but still only 5v.

C6907, R6908, R6910-13 are ok my mistake PP3V3_G3H 0.16 I thought about PPBUS_G3H Can two CD3215 chip be damaged ? whether to focus on UB300/400 area.]

Board isn't necessarily clean but no liquid contact or relevant visible corrosion. 5v with battery. I have replaced some suspect capacitors. 1V1 LDO is present on U3100 and U3200 - on a dedicated USBC connector UB300 and UB400 has no voltage of 1.1v - on a dedicated USBC connector Now I have...

Macbook 15 Pro A1708, stuck 5v. Any idea ? UB300 CB300: 3V3_G3H: Diode-Mode: 0.331 3V3_G3H: 0v, Diode Test on LDO Rails: PP3V3_UPC_TA_LDO: on CB308: 3.3v, diode-mode: 0,492 only in one USB port PP1V8_UPC_TA_LDOA: on CB306: 1.805v, diode-mode: 0,502 only in one USB port PP1V8_UPC_TA_LDOD: on...

New battery arrived - everything works.