• Dell Alienware M17 R5 LA-F551P - Problem z baterią - brak napięcia

It is currently 14 December 2024, 07:56

 [SOLVED] Dell Alienware M17 R5 LA-F551P - Problem z baterią - brak napięcia

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#1 Dell Alienware M17 R5 LA-F551P - Problem z baterią - brak napięcia

by Unknown • 18 March 2024, 18:45
Hej,

Płyta LA-F551P
CPU i7-8750
GPU GTX1070
PCH SR40B


Mam problem z odnalezieniem przyczyny braku ładowania baterii, płyta miała strzelony kondensator na linii B+_BIAS oraz kodek audio

Drugim problemem jest brak ładowania baterii, została zakupiona nowa oryginalna.
Moje obserwacje:

Bateria po odłączeniu od płyty ma na złączu ~10V, po podłączeniu do płyty na plusie jest około 300mV. Po podłączeniu zasilacza napięcie wzrasta do 860mV.

Zasilacz jest rozpoznawany w BIOS.

Wymieniłem BQ24780S, PD700, PQ703, PQ704.

Napięcia na BQ

Podłączona tylko bateria:
1. 800mV
2. 655mV
3. 79mV
4. 79mV
5. 0V
6. 10mV
7. 0V
8. 0V
9. 0V
10. 180mV
11. 0V
12. 0V
13. 400mV
14. 400mv
15. 0V
16. 0V
17. 680mV
18. 494mV
19. 674mV
20. 672mV
21. 0V
22. GND
23. 0V
24. 0V
25. 516mV
26. 660mV
27. 661mV
28. 630mV

Zasilacz + Bateria

1. 19.24V
2. 19.24V
3. 19.8V
4. 19.8V
5. 3.3V
6. 2.63V
7. 0V
8. 0V
9. 0V
10. 460mV
11. 3.4V
12. 3.4V
13. 470mV
14. 470mv
15. 33mVV
16. 3.3VV
17. 860mV
18. 890mV
19. 865mV
20. 864mV
21. 1.5V
22. GND
23. 0V
24. 6V
25. 5.6V
26. 865mV
27. 865mV
28. 19.5V

Pomiędzy PINami 19 - 27 jest 10Ω


Olśniło mnie podczas pisania i mierzenia.

Trafiony PQ707, zaniżone napięcie na PIN 4, powinno być 25V.

Temat zamknięty i rozwiązany.

Re: Dell Alienware M17 R5 LA-F551P - Problem z baterią - brak napięcia

by Google Adsense [BOT] • 18 March 2024, 18:45
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