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SSD_PWR_EN = 3.25V SSD_RESET_L= 3.30V PP3V3_S0SW_SSD = 3.3V P3V3SSD_VMON = 1V No corossion. No Shorts on these lines as well. Will not detect any SSD

Was checking JE900. PP1v25_AWAKE_IO is 0.080 diode to ground. I see this is directly linked to the CPU as well. Should inject 1V?

What should i do?

RestoreOS device removed before restored completed [com.apple.MobileDevice.MobileRestore – 0xFAA (4010)] with battery + trackpad connected

You want me to connect battery and then do dfu restore ?

Tried with board on bench. RestoreOS device removed before restored completed [com.apple.MobileDevice.MobileRestore – 0x9 (9)] Something weird i have noticed. When checking storage settings under iOS files i see "iOS 15.6.1 for Mac Studio" which corresponds to the file for Device Restore for...

So i tuned it off using the external switch and entered dfu via the other switch. still got an error RestoreOS device removed before restored completed [com.apple.MobileDevice.MobileRestore – 0xFAA (4010)]

PMU_ONOFF_L to Ground right?

I am performing dfu restore without the audio board and power button. you want me to replace them (as they are damaged) and then perform dfu?

During dfu restore without battery connrcted - AC2 went half way and on the mac after the apple logo i got the red battery logo with the bolt sign. AC2 was stuck there.

Device came in dead. Audio board has been tampered and the flex of the audio board is damaged as well. Without these device turns on but shows exclamation and asks to restore. it will detect in AC2 in recovery mode but will not successfully restore. Try forcing into DFU and did a restore and i...

I will. But for this one any repair i should just in case it works out. a shot in the dark?

Sadly do not have a usb tester to test it

Connected 1 port to usb c amp meter and one port to ssd. USB port at 5v

Replaced U7100. Still not on.

Hi just checked and found PMU_CLK32K_SOC shorted. a small test point near the PPBUS fuse. Removed R8331 and the short still remains. BAD CPU ?

Changed both CD3217s. still turning on with battery but not charging. Its not even detecting any external usb device as well. PPDCIN_AON_CHG_R pulsing with amp meter.

4 - 12.2V 2 - 0.20V 17 - 0.006V 24 - 0.03V

What is to be done now ?

Device came in stuck at 5V. It had a 3v8_aon short 1 year ago fixed by us. Now we see C830A is agreen. PP1v2_s2 is shorted. Replaced caps. Device turns on but will only run on a charger. Before we could check any further the device is now back to 5v and cycling from 0 amp to 0.030 amps. PPBUS...