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Recent content by ajdoc

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    820-02536 liquid damage 5V 0A

    P_IN 5.15V AUX_DET 0.85V SMC_RST_IN 0V VDDA 4.46V VDDP 4.46V AUX_OK 0V AMON 0V BMON 0V
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    820-02536 liquid damage 5V 0A

    R5215 replaced (was in bad shape) and have now 0.85V. R5216 looks good and have correct resistance. Replaced U5200 as well and still 0.85V
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    820-02536 liquid damage 5V 0A

    "Still no voltage at C5252?" Still no voltage Without Q5216 AUX_DET have 0.16V (0.582 in diode mode)
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    820-02536 liquid damage 5V 0A

    Heavy liquid damage on multiple areas. PPBUS_AON on F5200 0.46V (0.495 in diode mode). F5200 has been lifted for more tests. LDOs of 3x CD3217 in diode mode are correct but PP3V3_S2_LDO have only 0.01V. U5200 voltages: P_IN 5.15V AUX_DET 0.52V SMC_RST_IN 0V VDDA 4.46V VDDP 4.46V AUX_OK 0V AMON...
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    820-00923 5V 0.04A

    OK, when battery was connected all came back to normal. Charger charge the battery without any issues and data has been recovered. Dont know why it was stuck at 5V but work now. Thank you so much for help.
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    820-00923 5V 0.04A

    Yes, tried with another charger, charger cable, USB C ports and the same behavior (flipped charger cable as well).
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    820-00923 5V 0.04A

    C7050 have 0.02V Some of those rails above are not stable and USB C meter switch off and it is in loop every 3 seconds, reach max 0.03A
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    820-00923 5V 0.04A

    P_IN 5.15V AUX_DET 1.28V SMC_RST_IN 0V VDDA 5.08V VDDP 5.08V EN_VR1 5.07V SMC_RST* 3.4V AUX_OK 3.4V AMON 0V BMON 0V 3V3_G3H 3.4V
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    820-00923 5V 0.04A

    A lot of liquid damage on U3100, U3200, U7100, U7420 Data needed. U3100, U3200 was not looking great. Replaced both but still the same 5v 0.04A from charger. LDOs on all four CD3215 in diode mode and voltage values are correct. PPBUS_G3H 0V and no short. I lifted one side of F7000 and on...
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    820-02100 20V 0.15A bootloop (DFU error 21)

    No luck. Wont go to DFU - tried option with PMU_ONOFF_L.
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    820-02100 20V 0.15A bootloop (DFU error 21)

    Cant find corrosion on the board. At the begging i noticed there Aplle logo on the screen for 2-3 seconds and it is bootlooping. There was no backlight. When the screen is connected then UP730 was getting hot (there is no short around and I think internal display is faulty thats why UP730 is...
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    820-00923 pulsing S5 rails

    Hmmm Dont know why but have stable PP5V_S4 and L7600 gets hot (85C, 5V and diode mode value correct) Replaced L7600 and is not hot anymore. With battery connected I have 20V 2.85A (board only 20V 1A) so system 'boots'? and battery is charging, fans spins. Caps lock not workig, no chime, CPU...
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    820-02016 20V 0.05A DFU error 4014

    Yes, battery was charged. It acts strange. I fitted board back to another restore attempt and board boots fine (with data). Disconnected battery and fitted all brackets/screws etc and again have 20V 0A and DFU mode. Next I fitted board to known working chassis with screen, fully charger genuine...
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    820-00923 pulsing S5 rails

    Sorry - I enter wrong board model. Correct board model: 820-00923
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    820-00923 pulsing S5 rails

    Board clean. PPBUS_G3H 13.05V PP3V3_G3H 3.4V PP3V3_S5 and PP5V_S5 voltage pulsing. lifted one side of L7660 and PP5V_S5 is stable (both side of L7660 stable 0V) so fault is on 3V3 rail? Diode mode values: PP3V3_S5 0.350 PP3V3_SUS 0.327 PP3V3_S4 0.326 PP3V3_2V7_NAND_VCC 0.304 PP3V3_S0 0.290...
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