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This macbook turn fan on without video, usb activity there is not.this measures PP3V42_G3H_REG=3.42 PPBUS_G3H=8.56 PP5V_S3_REG=5.1V PP3V3_S5_REG=3.3V PPVCCSA_S0_REG_R=0.78V PPCPUVCCIO_S0_REG_R=1.06V PDDR_S3_REG=1.35V PPVCORE_S0_AXG_REG=0V PPVCORE_S0_CPU_PH1=1.12 PLT_RESET_L=3.3V

yes, the problem persists, Veo que la placa tiene un poco de oxido en general, en los test point.Crees que un lavado ultrasonico pueda solucionar problema?

ALL_SYS_PWRGD goes up and down to 3v as the fan restarts

R7402 =91k is good, board 820-2936

any history? initially with a short C7516 now the computer gives video but with a white screen, activitie usb.Not video external.sometimes fan restarts constantly and it doesn't turn on.where would the problem be? in this moment computer doesn't turn on only fan restarts constantly

any story? previous technician reballed the 2 cd3217 a question I have cd3215 other logic board macbook air 2018 retina, it is compatible with logic board 2020 CD3217? where buy cd3217?

I already tried dfu problem persists

THE ONLY WAY TO DFU, IS WITH ANOTHER LAPTOP M1 CONNECT IT? client said that it discharged the battery and it did not turn on again

I don't know how this type of board works, can you help me with the measures to take; only 5v 20ma en tester

Well, I repair the flexgate of this computer the problem is solved that does not have video but has another problem in the lower lighting, I would like to know if you have any idea problem if it will be a problem with the screen or the same cable badly repaired or other problem. I do not have...

si da video, solo que se enciende solo, a veces se reinicia, se apaga de un momento a otro, ninguna historial de averia .Se prenden todos los leds . Como alimento la tarjeta con una fuente de alimentacion 12v 5A?

RTC_RESET_L=3.28v PCH_SRTCRST_L=3.2v PCH_INTRUDER_L=3.0v PCH_INTVRMEN=3.1

820-4668 este imac esta un poco loco, no necesita presionar el boton de encendido para encenderlo, al conectar el cable de poder se enciendo solo, a veces se reinicia solo, disculpe escribir español pero para hacerme entender un poco mejor en este caso

battery cmos battery is good, Which rtc signals do I measure?, un dato cuando el equipo esta sin encender no tiene ningun led encendido en la tarjeta.luego de un tiempo se enciende solo y prenden los leds

this imac turns on by itself.and then it turns itself off.Este imac se apaga solo de un momento a otro.tambien luego de un tiempo se prende solo.Solo he cambiado fuente de poder.Una ayuda para este caso

This computer does not detect ssd good condition in disk utilities corrosion C8070 and around U8070, clean U8070 and change c8070 these are some measurements whith ssd inserted U8070 PP3V3_S0SW_SSD_FET_R=2.5 PP3V3_S5=3.3v U3740 pin 1 PP3v42_G3H: 3.447V pin 2 P3v3SSD_VMON: 0.73 pin 3...

This laptop is constantly restarting, also sometimes kernel panic and sometimes it shows screen distortion.any indication of this problem

the fan left fan make a lot of noise,I already changed with another fan and also with another top case, the problem persists.I don't know what measures to do or where the problem comes from

12V_S5_FET;it goes down to 11.3v and goes back to 12. 11 when I press power The led turns off for an instant when value from 12V_S5_FET12.11 to 11 and it is at the same moment

The macbook air had previously entered due to the same problem, diode d7005 was changed, now the same diode fails again these are measurements with only battery PPBUS_G3H_R=8.36v PPVIN_G3H_P3V42G3H=0.110 R7006=5 ohms