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I took the measurements and let me know if I missed any. PPVCCCPU_S0G = 0v PPVCCSA_S0G = 1v PPVCCGT_S0G = 0v PP1V2_S3 = 1,2v PPVCCIO_S0G = 0,9v PP1V_S3= 0,9v PP1V_S0G = 0,9v PP1V2_S0G = 1,2v I checked and there was no broken component.

Macbook had a bad keyboard and the keyboard was changed, after completing the change when reassembling it stopped turning on, locking at 19.27V 0.251A at the power supply. PPBUS_G3H = 13.05v pp5v_s5 = 5.1v pp3v3_g3h = 3.4v PP3V3_S4 = 3.3v PP3V3_S0 = 3.3v PP1V8_S3 = 1.8v PP1V2_S3 = 1.2v...

I have a MacBook A1502 13" mid 2014 that doesn't turn on. I have orange LED. PPBUS_G3H = 12.56V PP5V_S5 = the voltage fluctuates from 2.9v to 4.9v in an ever-increasing manner, the same for the PP3V3_S5 rails rails S4 and S0 are without voltage. Any suggestions on what to check? I'm suspicious...

thank you.

yes I tested it, thank you.

When turning on the machine I received a panic error "panic(cpu 0 caller Oxffffff7f9d66eeda): "virtual bool IOAccelDisplayMachine::display_mode_did_change(uint32_t): AMDRadeonAccelerator driver returns false" @IOAccelDisplayMachine. cpp:345 Panicked task 0xffffff86ece18428: 9 threads: pid 143...

I measured PM_SLP_S4_L 0V and triggering SMC_ONOFF_L it remains 0V

I didn't receive errors in diagnostic mode, and in safe mode I can turn on the Mac. One detail that might be important to mention is that during normal startup, before it shuts down, the cooler accelerates and shuts down on the loading screen.

I have an 820-01041-A that had a problem "your computer restarted because of a problem" this is a MacBook pro touch bar 15" 2018 A1990 I did a restore through Apple configurator 2 and reinstalled the system to eliminate possible software problems. However, I still have the same error, the...

I did the procedure, measured the pulse drop, 3.3V PM_PWRBTN_L when triggering on SMC_ONOFF_L the voltage drops to 0.3V

I have a Macbook Air 820-00165 that had liquid damage, in the visual analysis identify the capacitor c2952/53/50, all with visual oxidation, putting the pp3v3_S4 mesh in short, after removing these capacitors the mesh returned to the standard diode mode. I have a lack of voltage in the...

u7600 Basics Voltagens 12 - 5,1V 16 - 0,2V 17 - 0V 6 - 0V 15 - 4,87V R7630 -> 2.2 Ohms R7631 -> 0 Ohms

L7430 -> 1,19V /DIODE 0.169 L7630 -> 0.239V /DIODE 0.109

*changing the Q7630, I removed a fault that was in ppbusg3h after that I obtained the voltages *ALL_SYS_PWRGD -> 0,062V / diodo 0,386

I checked the s0 pins. PP1V5_S0 - 0.327 PP0V6_S0_DDRVTT - 0.092 PPVCC_S0_CPU - 0.005 * R8185 has 0 Ohms * U7870 voltages pin 1 -> 0V - diode 0.327 pin 2 -> NC - OL diode pin 3 -> 0V - 0.441 diode pin 4 -> 0V - 0.346 diode pin 5 -> Ground - diode 0 pin 6 -> 0.829V - 0.324 diode One more...

Hello, I have a MacBook air 13 a1466 2017. which had liquid damage, I corrected the u7600 which was oxidized and the machine started up again, after 10 days it started to show a problem again without turning on, freezing at 0.284 mA, I changed the u7600 once which had liquid damage, but did not...

820-00928 BIOS

I came to give feedback, after re-recording the Bios chip the machine started working again. One more detail, the first rom you told me to clear had a password, so I tried to download another one and it worked. I'll share it here to help someone who needs it in the future. Thank you very much...

I'll try it today and get back to you, thanks.

Thank you, my friend. About DFU this machine is a 2017 I don't think it goes into DFU. I tried to do that, but I couldn't.