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  1. H

    A1398 820-3787-A no power

    Hi, Yes. I've tried with a good DCIN board. Right now i don't even have PP3V42_G3H PPDCIN_G3H = 19.9V PPBUS_G3H = 0V, and 0.454 diode reading PP3V42_G3H = 0V, and 0.578 diode reading PP5V_S5 = 0V, and 0.506 diode reading PP3V3_S5 = 0V, and 0.152 on diode reading U7000: 1= 0V 2= 0V 3= 0V 4=...
  2. H

    A1932 820-01521 DFU error

    Sorry, here it is the ing. I corrected the inicial post also, with adicional information about the update error
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    A1932 820-01521 DFU error

    Hi, I have an A1932 820-01521 that enters in DFU mode, but always gets an error before the end. Sometimes it says that he needs to install a software update (on the Mac with the Apple Configurator 2), I start the update, but at the end it says that it can not update , because nothing was found...
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    A1398 820-00163-5 no image

    Tks. Can I disable GPU with medusa on this model? Do you think it worth trying'
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    A1398 820-3787-A no power

    Hi. After using an original 85W charger, the mac now powers on, but it dosen't charge the battery, and has no green light on the charger. Shall i replace SMC?
  6. H

    A1398 820-00163-5 no image

    Hi. Thank you for the BIOS. I've already flashed the clean ME BIOS, but i have the same result. No USB activity.
  7. H

    A1398 820-00163-5 no image

    Hi, Can you please share a clean ME for this model?
  8. H

    A1398 820-00163-5 no image

    Hi, Client said that the display started going black and stopped giving image. I didn't try new BIOS, but it seams that someone tried before me. PLT_RESET_L = 3.3V
  9. H

    A1398 820-00163-5 no image

    Hi, I have an A1398 820-00163-5 with no image. Nither internal or external. I have green light, CPU gets hot, have fan spin that increase RPM after a few seconds. All big coils have voltage, but USB tester doesn't show USB activity. Can you help?
  10. H

    A1398 820-3787-A no power

    Hi, I haven't tried SMC Bypass (sorry, forgeted), but it powers on in SMC Bypass. When triggering SMC_ONOFF_L, i have drop pulse at PM_PWRBTN_L, but no pulse at PM_SLP_S4_L. However, I have no green light on charger Shall I replace SMC?
  11. H

    A1398 820-3787-A no power

    Hi, You've asked for U7010 voltages in previous reply. I guess it was a distraction. It seams that sometimes the mac reboots randomly. PPBUS_G3H = 12.56V (stable until reboots) 3V42_G3H = 3.4V (stable until reboots) PP3V3_S5 = 3.3V (stable until reboots) PP5V_S5 = 5V, but sometimes...
  12. H

    A1398 820-3787-A no power

    Hi. Can't find U7010 on this board. I think it was a typo. U7100: 1 = 0.002V 2 = 19.74V 3 = 4.7V 9 = 0.033V 12 = 3.4V 13 = 3.4V 14 = 3.3V 15 = 0.053V 17 = 12.54V 19 = 5.4V 20 = 5.4V 27 = 16.30V Q7010: PPDCIN_G3H = 19.99V PPDCIN_G3H_ISOL = 19.99V DCIN_ISOL_GATE_R = 6.65V DCIN_ISOL_GATE = 6.65V...
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    A1398 820-3787-A no power

    R7105 was bad. After replacing it, I've got the correct ohm value. D7105 seams to be OK. CHGR_DCIN_D_R = 19.75V However, Still the same behavier.
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    A1466 820-00165-A no power

    Hi. No, it's set to 5A. It reaches around 1.8A, with 3V, but I can't see nothing hot. Can it be an internal board layer (not sure if this makes any sense)?
  15. H

    A1466 820-00165-A no power

    Nothing gets hot, even increasing until 3V and consuming 1.8A. I've removed L7560, C7593, C7592, C7590 and C7572 but PP3V3_S5_REG_R remains shorted (0.002 diode reading), and nothing gets hot even so.
  16. H

    A1466 820-00165-A no power

    L7560 diode reading = 0.002 Pad 2 (PP3V3_S5_REG_R) = 0 0.001 Pad 1 (P3V3_S5_REG_L) = 0.441 Can I inject 1V on PP3V3_S5_REG_R?
  17. H

    A1398 820-3787-A no power

    "2 = 0.004V" Check for short there. U7100 was shorted. After replacing it, now I have: 1 = 0V 2 = 4.7V 3 = 4.7V 9 = 0.033V 12 = 3.4V 13 = 3.4V 14 = 3.3V 15 = 0.053V 17 = 12.54V 19 = 5.4V 20 = 5.4V 27 = 17.75V My shematic seams to be wrong, causeI can't find Q7010 on this board (seams a...
  18. H

    A1466 820-00165-A no power

    Hi. U7501: 23 = 8.59V 22 = 3.3V 12 = 3.4V 13= 1.996V 29 = 5V 21 = 3.4V
  19. H

    A1398 820-3787-A no power

    Hi. Yes, I've just recheked them: U7100: 1 = 18.53V 2 = 0.004V R7180 = 99.9 kohm R7181 = 61.9 kohm R7185 = 468.3 kohm R7186 = 329.5 kohm All traces have continuity
  20. H

    A1466 820-00165-A no power

    3V3_S5/SUS are both with 0V * I've made a mistake with the board model. The correct board model is 820-3437
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