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  1. S

    doesn't turn on a1278 3115b

    R7402 / 03 are both good. on L7630 and L7770 they have 0.9V and 1.25V. for that half second. "Check the pulse on L7630 and L7770" you mean with oscilloscope?
  2. S

    doesn't turn on a1278 3115b

    on the L7260, L7330, L7550, L7510, L7520, L9701, L3895, L7760 coils. and what I can see in the multimeter are the following values (for approximately 0.5 seconds) L7260 = 3.5V L7330 = 1.3V L7550 = 0.03V L7510 = 0.09V L7520 = 0.09V L9701 = 0.1V L3895 =1.4V L7760 = 1.2V
  3. S

    doesn't turn on a1278 3115b

    0.20A and 0.04A .the fan turns on and off
  4. S

    doesn't turn on a1278 3115b

    Im so sorry, I feel so dumb . Its in Amps not Voltage from what the PSU consumes.
  5. S

    doesn't turn on a1278 3115b

    the fan turns on and off
  6. S

    doesn't turn on a1278 3115b

    measuring PM_PWRBTN_L is very unstable (goes crazy) it changes to many values.
  7. S

    doesn't turn on a1278 3115b

    no, it still doesn't turn on. When connecting the power supply it has a peak of 0.20V for about half a second and then drops to 0.04V
  8. S

    doesn't turn on a1278 3115b

    OK, I ALREADY REPLACED R1801. NOW PCH_INTRUDER_L = 2.7V. how much should PCH_INTRUDER_L measure?
  9. S

    doesn't turn on a1278 3115b

    not yet, before doing it I wanted to know if it was important that PCH_INTRUDER_L was unstable
  10. S

    doesn't turn on a1278 3115b

    R1801 is good (1M)
  11. S

    doesn't turn on a1278 3115b

    Measuring PCH_INTRUDER_L I see that it is a bit unstable. starts at 1.70V and goes up until it reaches 2.10V, 2.12V approximately
  12. S

    doesn't turn on a1278 3115b

    I soldered U7941 again and now I have the 3 signals PM_BATLOW_L = 3.2V PM_DSW_PWRGD = 3.44V PCH_DSWVRMEN = 2.5V and also S5_PWRGD = 3.05V
  13. S

    doesn't turn on a1278 3115b

    SYSCLK_CLK32K_RTC = 0.6V RTC_RESET_L = 3.3V PCH_SRTCRST_L=3.3V PCH_INTRUDER_L=2.11V PCH_INTVMEN_L=2.70V PM_BATLOW_L = 0V PM_DSW_PWRGD = 0V PCH_DSWVRMEN =1.95V
  14. S

    doesn't turn on a1278 3115b

    I don't have any history of why the computer stopped working. 3V3_S5 = 3.3V 3v3_sus is not present (0V) Exact PPBUS_G3H voltage (without battery) = 12.56V
  15. S

    doesn't turn on a1278 3115b

    hi i have the situation very similar to the rossman wiki. Green light, no light: 0.05 A on power supply. P5VS3_EN_L = 3.42V (pin 2 of Q7221) P5VS3_ENTRIP = 0V (pin 6 of Q7221) When Q7221 was removed, PP5V_S3 was good (5V). PM_SLP_S4_L = 0 V (pin 1 of Q7911) in my case the consumption is much...
  16. S

    a1278_a3115b does not turn on

    I have a situation similar to the example of the rossman wiki. Green light, does not turn on - 0.03A power source ------------------------------------------ PP5V_S3 = 0V P5VS3_EN_L was 1.42V to ENTRIP1 on TPS51125 (U7200) When Q7221 was removed, PP5V_S3 was good (5V) PM_SLP_S4_L = 0V on pin 1...
  17. S

    820_3115 b a1278 No power

    testing on a good board PLT_RESET_L = 0V. I shouldn't get it in s5 right?
  18. S

    820_3115 b a1278 No power

    yes, now I have PLT_RESET_L = 3.32V
  19. S

    820_3115 b a1278 No power

    I checked u2650 and saw in the microscope that pins 2 and 3 were joined by little solder, I resold it and I have pin 4 of U2650 / 60 = 3.32 V pin 17 of u7300 = 3.32V pin 3 of u7300 = 0.75V VCORE is still at 1.1V
  20. S

    820_3115 b a1278 No power

    CPUIMVP_PGOOD = 0V ALL_SYS_PWRGD = 3.3V
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