Search results

  1. P

    820-02020 stuck @5v

    P3V3S2_EN fluctates...from 1,7 1,4, 0,8 0 in loop
  2. P

    820-02020 stuck @5v

    soldering an 1.5UH-20%-12.5A-0.01OHM (just for test) in the place of lc710, i have 0,430 diode mode and higher resistence (i'm not able to read the value because it change continously...like from M to K) THIS IS REAL
  3. P

    820-02020 stuck @5v

    why you say that? on PP3v3_S2.i've no short anymore...if i go with power supply on that line, nothing happen....so i think this line is fixed?! soldering an 1.5UH-20%-12.5A-0.01OHM (just for test) in the place of lc710, i have 0,430 diode mode and higher resistence (i'm not able to read the...
  4. P

    820-02020 stuck @5v

    you mean comparing with opernboardata? now i have 0,200 / 0,600k resistence to ground openboard data says 0,400 /40m :( PP3V3_S2_WLBT_ISNS is 0,025 in diode mode,47 ohm resistence to ground
  5. P

    820-02020 stuck @5v

    i dont understand: is this problem related to the fact that i have unstable ldo and macbook cant switch to 20v?
  6. P

    820-02020 stuck @5v

    So it Could be a Wi-Fi problem? In This case, doing the “cut mod” i should use a Wi-Fi adapter right?
  7. P

    820-02020 stuck @5v

    i can clearly see that above wifichip become hot removing rd810, short is gone...so now what?
  8. P

    820-02020 stuck @5v

    Do you think it’s a short Line? how is it possible that i have floating voltages even if i have disconnected lc710 where the short is?
  9. P

    820-02020 stuck @5v

    i've removed lc710 (to isolate the line but removing it i've broken it...) I have 47 ohm resistence and 0,023 in diode mode on pp3v3_s2 Line.. If i inject some voltage, the Line takes 0,050A but I can’t find anything under termal camera
  10. P

    820-02020 stuck @5v

    PP3V3_S2_UPC3 3,3v floating PP1V25_S2 0v PP3V3_UPC0_LDO 3,3 PP1V8_S2 1,7 floating USBC0_3V3LDO_EN 1,7 floating UPC0_SS 0v PP1V5_UPC0_LDO_CORE 1,5v PPVBUS_USBC0 5v PPHV_INT0_AONSW 5v
  11. P

    820-02020 stuck @5v

    on u7700 i have only one ldo output: PP1V8_AON_SPMU and it is 1,7v all others ldo are 0v
  12. P

    [help]Imac 21,5 EMC 2428 Dead

    pin 17, 18, 5, 4, 24, 12. 12, 5, 5, 5 3,3 3,9 3,3 on l77100v on l7750
  13. P

    820-01958-A: completely dead: no voltage no amp

    removing d3302 and d3322 i've not short anymore.... now how can i substitute those components?
  14. P

    820-01958-A: completely dead: no voltage no amp

    I mean that I have set power supply with 1v and amp limit to 1amp And as soon as i touch the line, motherboard sink 1amp I’ve removed both cd3217 but short persist in both lines
  15. P

    820-01958-A: completely dead: no voltage no amp

    even removing both cd3217, o have the same resistence and 0,001mv in diode mode
  16. P

    820-01958-A: completely dead: no voltage no amp

    hi, please help! i have 820-01958 dead: no liquid spill or damage. amp meter stay completely off in both ports... i have 4ohm resistence on PP20V_USBC_X_VBUS and PP20V_USBC_T_VBUS If i go on those line with power supply with 1v 1amp, it goes directly to 0,27v 1amp in both lines but i can't...
  17. P

    [help]Imac 820-2641 TOTALLY DEAD; NO LED

    i've resoldered another u7700 and i have had for a moment the first led.
  18. P

    [help]Imac 820-2641 TOTALLY DEAD; NO LED

    from where is generated 3v3_s5?i'm pretty sure that u7700 is soldered good i confirm that i have 0,3 on pin 12
  19. P

    820-02020 stuck @5v

    very difficult to find isnt'it?
Top