• Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

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Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

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#1 Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

by kuras00 • 21 November 2025, 15:01
Witam,
pacjent jak w temacie - nie rozpoznaje zasilacza, nie ładuje baterii.

Poczynione kroki:
1. Ciągłość między pinem zasilacza a PR3 jest
2. PR3 100kΩ - jest ok (dla pewności wymieniony na nowy bo już miałem przypadek, że mimo poprawnej wartości robił problem)
3. PR6 15kΩ - ok
4. PR1 33Ω - ok

Podłączony zasilacz:
PR1 - 3,4V z dwóch stron
PR3 - n1 3,4V, n2 0,45V
PR6 - n1 0,45V, n2 0V


Dodatkowo po podłączeniu zasilacza grzeje się APU. Czy to tu będzie leżał problem?

Re: Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

by Google Adsense [BOT] • 21 November 2025, 15:01

#2 Re: Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

by matic • 21 November 2025, 21:59
Hello!

Measure the voltages to ground on all pins of transistor PQ1.
Transistor PQ1 pinout:
Image

#3 Re: Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

by kuras00 • 22 November 2025, 10:58
Cześć matic!

matic wrote:Measure the voltages to ground on all pins of transistor PQ1.

1. 3,3V
2. 5,1V
3. 3,3V

Zwróciłeś uwagę na to?
kuras00 wrote:Dodatkowo po podłączeniu zasilacza grzeje się APU. Czy to tu będzie leżał problem?

Image

#4 Re: Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

by matic • 22 November 2025, 15:59
kuras00 wrote:Dodatkowo po podłączeniu zasilacza grzeje się APU. Czy to tu będzie leżał problem?
Does the machine respond to the power button and turn on with a picture on the screen?
If so, measure the voltages to ground on all coils when the machine is turned off.

kuras00 wrote:nie rozpoznaje zasilacza
Do you get any error message about this? If so, post a picture of the screen.

#5 Re: Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

by kuras00 • 24 November 2025, 13:39
matic wrote:Dodatkowo po podłączeniu zasilacza grzeje się APU. Czy to tu będzie leżał problem?

Automatycznie włącza się do BIOSu po podłączeniu zasilacza i stąd te grzanie :frustry: :frustry: :frustry:

matic wrote:If so, measure the voltages to ground on all coils when the machine is turned off.


PLB01 - ON 0,05V / 0,195V OFF
PLM01 - ON 1,2V / 0V OFF
PL301 - ON 3,3V / 3,3 OFF
PLG2 - ON 1,8V / 0V OFF
PLZ02 - ON 1,25V / 0V OFF
PLZ01 - ON 1,25V / 0V OFF
PL501 - ON 5,1V / 5,1 OFF


matic wrote:Do you get any error message about this? If so, post a picture of the screen.

Image

#6 Re: Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

by Vogelek23 • 25 November 2025, 01:18
Zmierz napięcia do masy na pinach 1, 4, 5, 6 i 7 złącza baterii w dwóch turach: z podłączoną baterią i zasilaczem, oraz z podłączoną tylko baterią. Jeśli dysponujesz oscyloskopem, to zamieść także oscylogramy z pinów 4 i 5 (preferowane ustawienia: amplituda 1V/działkę, podstawa czasu 500µs/działkę, trigger na 1V).

#7 Re: Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

by kuras00 • 25 November 2025, 11:42
Vogelek23 wrote:Zmierz napięcia do masy na pinach 1, 4, 5, 6 i 7 złącza baterii w dwóch turach: z podłączoną baterią i zasilaczem, oraz z podłączoną tylko baterią.


Bateria:
1. 0,190V
4. 0
5. 0
6. 3,3V
7. 0V GND

Bateria + zasilacz:
1. 0,057V
4. 3,34V
5. 3,34V
6. 3,28V
7. 0V GND

Vogelek23 wrote:Jeśli dysponujesz oscyloskopem, to zamieść także oscylogramy z pinów 4 i 5 (preferowane ustawienia: amplituda 1V/działkę, podstawa czasu 500µs/działkę, trigger na 1V).

Brak :oops:

#8 Re: Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

by matic • 25 November 2025, 15:03
With this measurements the battery is damaged and needs to be replaced.
However, this is not related to the problem of the power supply not being detected.

- Measure the voltages to ground on pins 8, 14, 17, 18, 19, 20, 21, 22, 23, 24, 25 of charger chip PUB01 with the power supply connected only (without the battery).

#9 Re: Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

by kuras00 • 25 November 2025, 15:55
matic wrote:Measure the voltages to ground on pins 8, 14, 17, 18, 19, 20, 21, 22, 23, 24, 25 of charger chip PUB01 with the power supply connected only (without the battery)




8. 5,28V
14. 19,57V
17. 19,23V
18. 5,28V
19. 0V
20. 1,42V
21. 3,35V
22. 3,35V
23. 5,27V
24. 3,12V
25. 0V

Re: Dell Inspiron 15 3511 - GDM50 LA-L241P Zasilacz nierozpoznany

by Google Adsense [BOT] • 25 November 2025, 15:55
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