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Quick update. After replacing U9850 I manage to put it on DFU mode and all voltages stayed on. Done the revive and the Mac is alive. Thanks to everyone that help me out here.

Ok thanks

Yes, that's the one I'm using. 96W. On DFU mode it reacts the same. It goes to DFU mode and the same happens after about 30 secs.

Original Apple charger. I have 2 more original charger. I will try with those 2 tomorrow.

It is restarting with and without a battery. The battery is charging fine and it same thing happens only on the battery. Only the LB alone same thing. CPU core goes to 1.3V then drop to 0.69V and after a few secs restarts. USB activity on a USB stick with LED light. The USB stick power on starts...

Diode mode LCD disconnected. EDP_INT_AUX_N - 460 EDP_INT_AUX_P - 461 EDP_INT_ML_N<0> - 409 EDP_INT_ML_P<0> - 406 EDP_INT_ML_N<1> - 408 EDP_INT_ML_P<1> - 408 EDP_INT_ML_N<2> - 412 EDP_INT_ML_P<2> - 408 EDP_INT_ML_N<3> - 408 EDP_INT_ML_P<3> - 407 ----------------------------------------------...

The battery is good as I've tested the same battery on another mac I had from another customer and it worked fine. I will check the U9850. The liquid wasn't near the screen connector on the logic board, but on the little board on the screen.

on L7211 starts at 1.9v then drop to 0.69v and after 25 secs 0v. USB ports are normal Is it normal for the CPU to boil hot just after plugging the charger?

Hi, everyone Please I need help with these Mac. Liquid damage on-screen board and logic board had some oxidation around C1171. After cleaning the corrosion and oxidation the board turns on, but no display. Tested with another display and still same. If I leave the battery connected it turns on...

I bought it from Mouser.co.uk. Yes, the heat sink and logic board were removed. I will try to remove the internal SSD and test with external USB macOS.

My diagnosis for this was the 3 power regulation IC for the CPU. Ordered 3 "FDMF 3030" ICs and replaced them, but unfortunately the same issue. Please does anyone has any idea what's the next step to check is? Thanks

The charger was is entering protection mode. After replacing C7809 - PP3V3_G3H_PMU_VDDMAIN the short is gone Board is getting PP3V3_G3H 12..32V steady and no short anymore The charger is supplying 20V - Amps is varying from 0.0350A to 0.0915A. Faulty U7000 U7000 - CHGR_LX2 power cycling from...

Hi. I have this board that came in for no power. No liquid, but very dust inside. I found a short on PPBUS_G3H and it leads me to U9580 small burn mark on top. So removed and short on PPBUS_G3H is gone. Now it has the following shorted lines: - PP2V5_NAND_SSD0 - PP1V8_SSD0 Both readings in...

I'm scratching my head now. Both U3100/200 were replaced and the same is happening. The USB-C area looks fine.

Sorry, I miss a lot of information in my first post. On PPBUS_G3H - drop from 12.6V to 12.3V then return to 12.6V All were measured for 10 secs. L7030: intermittent voltage starts with 12.59V then vary to 11V and drops to 3.50V L7690: PP3V3_G3H - 3.3V stable L7670: PP5V_G3S - 5,12V drop to...

Ok, I will try to use the SE032 to enter in DFU mode. How can I use these pads to enter in DFU mode? Is it by shorting PP1V8_SLPS2R and SOC_FORCE_DFU and does it needs a keyboard, charger, or battery connected? I've tried this and still nothing. Thanks

L8100: 1,2V PP1V2_S3 - as soon as the charger is plugged the voltage goes to 1.2v and after about 10 secs it drops to 0v and stays at 0. L7210/20: 0.8V and same as above it drops to 0v after about 10 secs. I've done a short video with the issue and the thermal hot spots while turning it on.

The drop voltages goes to 0v and stay at 0v. All SLPS2R and AWAKE stays steady On. PPBUS_G3H - always at 12.6V. Nothing abnormal under thermal camera.

Hello, community! I need help, please. I have a MacBook Pro A2289 TouchBar that initially had liquid damage on both sides of the board around U3200/U3100. I've reflowed the area and then cleaned on U.S cleaning. Currently, the motherboard (820-01987) partially supports the 20V load. The 2...

Tried 2 other bios chips and firmware. Inspecting the board doesn't seem to have any missing components. There is any way to find out why the PPVCC_S0_CPU is not dropping to 0.6V?