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

It is currently 14 December 2024, 09:36

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

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  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
  2. Topic message should contain: the PCB marking code (required in case of hardware repairs), an extended description of problem, things you have checked/replaced/measured, your conclusions and the question. If you are not able to find the PCB marking code, please read THIS TOPIC. If you still cannot locate the PCB markings, please upload a clean, both-side photos of the mainboard - it is required to remove any films, modules or brackets possibly covering these markings.
  3. Before posting a new topic please read all topics in TRAININGS subforum and make a preliminary diagnostic based on the content of those trainings.
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 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).

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

by matic • 18 January 2024, 08:30
The chip PU8 is damaged almost for sure and needs to be replaced.

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

by Google Adsense [BOT] • 18 January 2024, 08:30

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

by LukaszBsKrakow • 18 January 2024, 11:46
I am ordering the NCP81205 chip, the initial characters match, is the rest included in it the same?


Image

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

by matic • 18 January 2024, 14:53
Image

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

by LukaszBsKrakow • 20 January 2024, 16:40
PU8 will work, it does not heat up.
The graphics heat up and the frame temperature is about 35 degrees.
No voltage on the processor.
Reprogram BIOS?
Image

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

by matic • 20 January 2024, 22:27
Measure the voltages to ground on pins 15, 16, 26, 38, 39, 40, 41, 42, 43 of chip PU8, when the machine is turned on.

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

by LukaszBsKrakow • 20 January 2024, 22:41
N.15 19,8V
N.16 5,11V
N.26 5,1V
N.38 0V
N.39 0,99V
N.40 0,99V
N.41 0,99V
N.42 0,99V
N.43 3,3V

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

by matic • 21 January 2024, 12:16
Check your solder joints on all pins of chip PU8.

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

by LukaszBsKrakow • 21 January 2024, 18:57
I corrected the soldering of PU8 and now the laptop starts up for 5 seconds, heats up PQ7 very much and a humming noise can be heard.

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

by matic • 3 February 2024, 12:56
Please, post a clear pictures of solder joints on chip PU8 from all four sides.

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

by Google Adsense [BOT] • 3 February 2024, 12:56
 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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