Inel NUC 8i7BEH Martwy

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#1 Inel NUC 8i7BEH Martwy

by mmike • 12 July 2023, 12:24

Witam

Pacjent jak w temacie, nie znalazłem żadnego zwarcia, jednakże nie wiele odnalazłem bez schematu.
Brak napięcia na włączniku, 19V poprawnie wchodzi na płytę.

Czy ktoś posiada jakąś dokumentację ewentualnie zna lepiej płytę?

Z góry dziękuje za pomoc. Poniżej zamieszczam fotografie płyty.

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Re: Inel NUC 8i7BEH Martwy

by Google Adsense [BOT] • 12 July 2023, 12:24

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#2 Re: Inel NUC 8i7BEH Martwy

by matic • 12 July 2023, 13:07

Hello!

Measure the voltage to ground on any pin of marked resistor:

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#3 Re: Inel NUC 8i7BEH Martwy

by mmike • 12 July 2023, 13:26

19V

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#4 Re: Inel NUC 8i7BEH Martwy

by matic • 12 July 2023, 15:11

Measure the voltages to ground on coils "A" and "B":

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#5 Re: Inel NUC 8i7BEH Martwy

by mmike • 13 July 2023, 07:39

A - 0V / 2kOhm
B- 0V / 2kOhm

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#6 Re: Inel NUC 8i7BEH Martwy

by matic • 13 July 2023, 08:46

Measure the voltages to ground on pins 1, 5, 9, 11, 12, 15, 17 of chips "a" and "b":

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#7 Re: Inel NUC 8i7BEH Martwy

by mmike • 14 July 2023, 08:28

A(BACBQI)
1 - 0,30V
5 - 19V
9 - 0V
11 - 0V
12 - 0,28V
15 - 0V
17 - 0,13V

B(BDJBRT)

1 - 0,30V
5 - 19V
9 - 0V
11 - 0V
12 - 0V
15 - 0V
17 - 0V

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#8 Re: Inel NUC 8i7BEH Martwy

by matic • 14 July 2023, 14:24

Measure the resistances to ground on pins 15, 17 of chips "a" and "b".

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#9 Re: Inel NUC 8i7BEH Martwy

by mmike • 17 July 2023, 08:26

A
15 - 6.8kOhm
17 - 7.4kOhm
B
15 - 4kOhm
17 - 7,1kOhm

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#10 Re: Inel NUC 8i7BEH Martwy

by matic • 17 July 2023, 09:39

Can you follow the copper trace connected to pin 11 of chips "a" and "b"?
If so, please post a clear picture of the chips "a" and "b" with a nearby surroundings and mark to which component(s) pin 11 of each chip is connected to.

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#11 Re: Inel NUC 8i7BEH Martwy

by mmike • 17 July 2023, 12:00

Pin 11 nie łączy się z niczym obok chipów "a" oraz "b".
Na mikroskopie również barak możliwości śledzenia ścieżki.

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#12 Re: Inel NUC 8i7BEH Martwy

by matic • 18 July 2023, 19:11

Please, post a clear pictures of chips "a" and "b" with a nearby surroundings.

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#13 Re: Inel NUC 8i7BEH Martwy

by mmike • 20 July 2023, 12:20

Taka jakość wystarczy?

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#14 Re: Inel NUC 8i7BEH Martwy

by mmike • 24 July 2023, 09:11

Masz jeszcze jakieś pomysły?

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#15 Re: Inel NUC 8i7BEH Martwy

by matic • 27 July 2023, 10:27

Please, post a clear picture with visible markings on the marked chip.

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#16 Re: Inel NUC 8i7BEH Martwy

by mmike • 27 July 2023, 10:35

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#17 Re: Inel NUC 8i7BEH Martwy

by matic • 27 July 2023, 11:37

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

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#18 Re: Inel NUC 8i7BEH Martwy

by mmike • 27 July 2023, 11:56

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

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#19 Re: Inel NUC 8i7BEH Martwy

by matic • 27 July 2023, 12:31

mmike wrote:1 - 0V

Is this measurement correct?

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#20 Re: Inel NUC 8i7BEH Martwy

by mmike • 27 July 2023, 12:45

Błąd

1 - 19V

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Re: Inel NUC 8i7BEH Martwy

by Google Adsense [BOT] • 27 July 2023, 12:45

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