Search results

To save trouble of replacing U8600 would the data be readable or even boot into the OS if U9120/U9200/U9100 were moved and soldered to a working 820-00923 board since these have the T1 chip?

Trying to replace U8600 pad 315 PP1V8_SSD_HOT is missing however all other pads are present after cleanup. Will replacement U8600 still work for data recovery with this pad missing?

No response on tool. All pins have continuity now but pin 4 SSD_BOOT_LB_L is 0.77 diode and on donar is 427. Is this bad U8600?

Which pins on J9600 need to function with continuity to retrieve data with tool? I already have the tool

Can data still be retrieved even with this shorted CPU through J9600?

PP1V8_SUS is shorted. Removed everything but CPU but short remains. CPU needs replacing now in order to retrieve data?

Is it possible for this board to boot without J9600?

There is no continuity between SSD_BOOT_L and SSD_BOOT_LB_L lines. Does this need to be fixed at J9600?

Arrived with liquid damage and severe damage to J9600. Data is important. Diode mode reading on pin 4 J9600 is 0L and donar board is 0.432. Repaired all other traces on J9600 Is data still saveable if U8600 is replaced from donar board?

This arrived with liquid damage around U3100/U3200 area. Replaced U3100/U3200 from same donar board but no change. Amp meter is 5v 0.70amps PPBUS_G3H 12.30V All PMU and LDO voltages are present and it is not in DFU mode. What should be checked next??

No change after successful DFU restore with no errors

SPKRAMP_RESET_L diode 0.284 SPKRAMP_INT_L diode 0.284 no good board here to compare readings

Yes video plays fine and sound works when headphones are plugged in

I made a error in my post. U8000 was faulty and replaced. U7900 was never faulty or replaced.

When injecting voltage to find PPBUS_G3H short only U1100 showed heat on thermal cam. Once it was removed PPBUS short was gone

No liquid damage and board looks pristine. No audio even though sound can be adjusted from keyboard and under sound output MacBook Pro Speakers are listed as built in. When playing a YouTube video the timer for the video progresses along with the captions but the video itself remains frozen...

Arrived with no liquid damage with PPBUS_G3H shorted. U1100 was shorted. Replaced U1100, PPBUS_G3H was no longer shorted and had boot current over 2 amps for a few seconds before C8010 burned and smoked. Replaced but now board is at 20v 0 amp draw. PPBUS_G3H was shorted again from shorted u7900...

I believe I found the issue one of the Renesas 225701C power ic chips is getting hot under thermal cam. Do you know where I can purchase a replacement chip? Digi key and Mouser do not have it and the older M1 MacBooks use a different model Renesas chip.

Still shuts down with power button disconnected

As of today I cannot enter the options menu to access target disk mode or diagnostic now. As the power button is held I see the screen that says continue holding for startup options. I let go when it says loading startup options. Within a few seconds the screen goes black and the MagSafe light...