• Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

It is currently 14 December 2024, 06:59

Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

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#1 Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by LukaszBsKrakow • 9 January 2024, 00:32
Cześć,

SR2FP
N16P-GX-A2
ITE8528E
WINBOND 25Q64FVSIW
WINBOND 25Q32FVSIQ

Na stole mam obecnie laptop jak z tematu, który jest całkiem martwy.
Nie reaguje na włącznik oraz nie ładuję baterii.
Ze wstępnych pomiarów wynika, że na płycie nie mam żadnego napięcia oprócz 0,22V na cewce od ładowania baterii oraz kilku napięć na PU16.

Poniżej rezystancję poszczególnych gałęzi:
PL1 8,3 ohm
PL2 1,4 OHM
PL3 I 4 2,7OHM
PL5 6 1,5 OHM
PL7 525 OHM
PL8 17 OHM
PL 9 10 13,2 OHM
PL12 333 OHM
PL13 42 OHM
PL14 85 OHM ??? (zasilanie 1,35V RAM)
PL15 5M OHM
PL16 3,3K OHM
PL17 1,7M OHM

Napięcia jakie zlokalizowałem to :

PU16:
N.3 VREG3 3,3V
N.18 VREG5 5V
N.12 VIN 19,8 V
N.17 VBST1 4,78V
N.20 EN1 0,34V

Jak dobrze rozumiem, brakuję mi sygnału : 3.3V_ALW_ON który wysyłany jest z KBC do układu PU16 i on wystawia 3,3V_ALW ?
Na włączniku J2 w miejscu występowania 5V_ALW mam szczątkowe napięcie na poziomie 0,23 V

Z góry dziękuję za porady i pomoc.

Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by Google Adsense [BOT] • 9 January 2024, 00:32

#3 Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by LukaszBsKrakow • 9 January 2024, 09:28
Hi Machine,
RTC battery 3.2V.
This voltage also appears on PU16.

Can I apply 3.3V to PL16 and check the board's response?

#5 Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by LukaszBsKrakow • 9 January 2024, 23:45
D15
n.1 0V
n.2 0V
n.3 0,54V

Q30
n.1 GND
n.2 3,3V
n.3 0V

Q31
n.1 GND
n.2 0,9V
n.3 3,27V
n.4 GND
n.5 -6 0V

KBC issues EN1 and EN2 signal? Do I understand correctly?

#7 Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by LukaszBsKrakow • 11 January 2024, 08:36
Continuity between pin 3 and pin 6 of PU16 is present.

Q14 voltages:
1. GND
2. 3.3V
3. 0V
4.GND
5. 0V
6. 0V

Is it possible to damage the KBC software?

#8 Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by Machine • 11 January 2024, 09:59
Then on pin 6 of PU16 you have voltage and it must also be present on PL16=3V.
Is it possible to damage the KBC software?

it is possible but still, with the current measures, it is not possible to diagnose the rupture.

#9 Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by LukaszBsKrakow • 11 January 2024, 10:18
Ok I see.
Do you have any idea what to do next?

#10 Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by Machine • 11 January 2024, 10:48
Confirm me if on pl16 you have 3v (after pressing the start button).
Original power supply?
Measure the voltages on all coils (if necessary press the start button several times).

#11 Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by LukaszBsKrakow • 11 January 2024, 12:06
Original power supply.
No voltage on any coil when pressing the switch. I have 8V on the switch... now I measured it.

#13 Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by LukaszBsKrakow • 11 January 2024, 15:01
PL1 8,3 ohm
PL2 1,4 OHM
PL3 I 4 2,7OHM
PL5 6 1,5 OHM
PL7 525 OHM
PL8 17 OHM
PL 9 10 13,2 OHM
PL12 333 OHM
PL13 42 OHM
PL14 85 OHM ???
PL15 5M OHM
PL16 3,3K OHM
PL17 1,7M OHM

The voltage on the coils is only at PL15 0.22V, the rest of the coils are 0V

PU16:
n.1 0,36V
n.3 3,3V
n.5 0,84V
n.6 3,27V
n.8 0V
n.9 5V
n.12 19,8V
n.13 5V
n.17 4,77V
n.18 0V
n.20 0,06V

#15 Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by LukaszBsKrakow • 14 January 2024, 03:12
Hi again,

PU16 replaced, voltages of 3.3V and 5V appeared, when trying to start the board, the following voltages appear:
1.35V
0.95V
1.3V
and PU8 heats up (45 degrees)

Resistance on PL8 - 18 ohms
Voltage on PL8 0.95V

The fans are not spinning, the thermal imaging shows that the graphics card and VRAM are trying to start.

Is PU8 a CPU power converter? Am I right?

EDYCJA: chodziło mi o układ PU8 obok niej znajduje się cewka PL8

#17 Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by LukaszBsKrakow • 16 January 2024, 00:00
Measurements with the hob turned off:

PQ1
n.1-3 0V
n.4 0V
n.6-8 5,1V

PQ27
n.1-3 0V
n.4 0V
n.6-8 3,3V

Measurements with the hob turned on:

PQ1
n.1-3 5,1V
n.4 16V
n.6-8 5,1V

PQ27
n.1-3 3,3V
n.4 16V
n.6-8 3,3V

#18 Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by Machine • 16 January 2024, 10:56
PU16 replaced, voltages of 3.3V and 5V appeared, when trying to start the board, the following voltages appear:
1.35V
0.95V
1.3V

Tell me where you measured these voltages.
Do you have voltage on PL13?

#19 Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by LukaszBsKrakow • 17 January 2024, 12:31
PL13 1V
PL16 3,3V
PL17 5,1V
PL15 0,85V
PL14 1,35V
PL8 0,95V
PL7 1,05V
PL12 1,33V
U16 N.8 3,3V
U15 N.8 0V


There is no voltage on the other coils
Image

Re: Dell 7559 DAAM9AMB8D0 REV:D Nie uruchamia się, brak podstawowych napięć.

by Google Adsense [BOT] • 18 January 2024, 08:25
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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