Inel NUC 8i7BEH Martwy

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Topic title should contain: the device's manufacturer, full model and the brief description of problem.
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#21 Re: Inel NUC 8i7BEH Martwy

by matic • 27 July 2023, 12:57

Measure the resistance and voltage to ground on coil "1R5" located near this chip.

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Re: Re: Inel NUC 8i7BEH Martwy

by Google Adsense [BOT] • 27 July 2023, 12:57

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#22 Re: Inel NUC 8i7BEH Martwy

by mmike • 27 July 2023, 13:12

1.8 kOhm / 0V

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#23 Re: Inel NUC 8i7BEH Martwy

by matic • 27 July 2023, 15:16

Replace the marked chip. It's NB680GD.

matic wrote:[ Obrazek ]

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#24 Re: Inel NUC 8i7BEH Martwy

by mmike • 28 July 2023, 09:27

Myślisz że NB681GD będzie zamienny?
NB680GD jest niedostępny w Polsce... :cry:

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#25 Re: Inel NUC 8i7BEH Martwy

by matic • 28 July 2023, 09:54

mmike wrote:Myślisz że NB681GD będzie zamienny?

No, there is no replacement for this chip almost for sure.
It appears on some laptop boards, for example: Inventec 6050A2723701-MB-xxx, 6050A2740001-MB-xxx, 6050A2860101-MB-xxx

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#26 Re: Inel NUC 8i7BEH Martwy

by mmike • 31 July 2023, 09:58

Mam takie modele:

6050A2723701
6050a2892401
6050a2635701

Masz może dokumentacje aby zweryfikować czy posiadają NB680GD ??

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#27 Re: Inel NUC 8i7BEH Martwy

by matic • 3 August 2023, 14:56

mmike wrote:Mam takie modele:
6050A2723701

Yes, the chip you are looking for should be on this board.
It should be the chip U60100 located in the marked place. Check the markings on the chip itself to make sure. If the markings are ALVx, the chip is suitable.

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#28 Re: Inel NUC 8i7BEH Martwy

by mmike • 22 August 2023, 08:56

Ukłąd wymieniony na nowy (NB680GD). Nic nie uległo zmianie

Cewka 1R5 - 1.8 kOhm / 0V

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#29 Re: Inel NUC 8i7BEH Martwy

by mmike • 25 August 2023, 07:30

Jakieś pomysły jeszcze?

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#30 Re: Inel NUC 8i7BEH Martwy

by matic • 25 August 2023, 08:22

Remeasure the voltages to ground on pins 1, 3, 5, 6, 8, 9, 11 of this chip.
Pin count:

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#31 Re: Inel NUC 8i7BEH Martwy

by mmike • 25 August 2023, 08:35

1 - 19V
3 - 0V
5 - 0V
6 - 3.3V
8 - 3.2V
9 - 3.6V
11 - 4.1V

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#32 Re: Inel NUC 8i7BEH Martwy

by matic • 25 August 2023, 13:08

Measure the resistance between pin 5 and pin 7 of this chip.

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#33 Re: Inel NUC 8i7BEH Martwy

by mmike • 25 August 2023, 13:54

0.1Ohm

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#34 Re: Inel NUC 8i7BEH Martwy

by matic • 26 August 2023, 19:36

Remove the marked coil from the board and inject 3.3V from the laboratory power supply to the marked pad. Limit the current to 0.5A.
What electrical current flows from the laboratory power supply in this case?

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#35 Re: Inel NUC 8i7BEH Martwy

by mmike • 28 August 2023, 08:54

22mA

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#36 Re: Inel NUC 8i7BEH Martwy

by mmike • 31 August 2023, 09:57

Masz jeszcze jakiś pomysł?

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#37 Re: Inel NUC 8i7BEH Martwy

by matic • 31 August 2023, 10:34

Test the replacement chip NB680GD on your scrap board:

mmike wrote:Mam takie modele:
6050A2723701

Solder the chip to the marked position, inject 19V from the laboratory power supply to the main power rail (B+) and measure the voltages suggested in post #30.

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#38 Re: Inel NUC 8i7BEH Martwy

by mmike • 31 August 2023, 10:49

Nie ma takiej możliwości płyta złomowa jest zalana.

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#39 Re: Inel NUC 8i7BEH Martwy

by matic • 31 August 2023, 10:57

Maybe you can clean it.
Is it spilled in the area of this chip?

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#40 Re: Inel NUC 8i7BEH Martwy

by mmike • 31 August 2023, 10:59

Tak dokładnie płyta jest zalana w tym obszarze, ponadto brak w niej wiele elementów i posiada inne usterki taki pomiar nie będzie miarodajny....

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Re: Inel NUC 8i7BEH Martwy

by Google Adsense [BOT] • 31 August 2023, 10:59

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