• DELL PRECISION 5530 nie rozpoznaje zasilacza

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#1 DELL PRECISION 5530 nie rozpoznaje zasilacza


by Milygawel 28 April 2023, 10:33
Laptop: DELL Precision 5530
Płyta: LA-G341P Rev:1.0

Witam. Laptop dostałem już po próbie naprawy, okazało się że zwarty jest mosfet PQ200, do tego wymieniłem Charger ISL88738H nie miałem identycznego więc wlutowałem ISL9538H (na innym schemacie znalazłem że mają taki sam pinout). Teraz laptop odpala ale nie wykrywa zasilacza. Niżej pomiary


PQ100
1. 3.3V
2. 5V
3. 3.3V

PQ101
1. 5v
2. 0.4V
3. 0V

Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


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#2 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by matic 28 April 2023, 11:12
Milygawel wrote:ale nie wykrywa zasilacza.
Hello!
What message exactly do you get? Does it say the power adapter is not connected or not identified?

Was the old charger chip damaged?

#3 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by Milygawel 28 April 2023, 11:47
Komunikat w BIOS "Not instaled". Stary charger nie wygląda na uszkodzony ale gdy był wlutowany przy klikaniu włącznika boczne diody tylko na ułamek sekundy lekko się podświetlały, po wymianie laptop normalnie się uruochomił.

#4 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by matic 28 April 2023, 12:07
The charger chip ISL9538H you soldered is very likely not compatible to the original one.
Solder the old original charger chip back to the board and measure the voltages to ground on pins 3, 4, 8, 12, 14, 15, 16, 17, 18, 19, 24 of charger chip.

#5 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by Milygawel 28 April 2023, 15:01
3. 13,5V
4. 13,5V
8. 5V
12. 17.8V
14. 18.8V
15. 18.8V
16. 18.8V
17. 18.3V
18. 5V
19. 3.3V
24. 3V

#6 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by matic 28 April 2023, 15:30
Measure the voltages to ground on pins 1, 4, 8 of transistors PQ200, PQ201.

#7 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by Milygawel 4 May 2023, 07:16
PQ200
1. 19.35V
4. 9.21V
8. 19.35V

PQ201
1. 19.35V
4. 19.35V
8. 18.16V

#8 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by matic 4 May 2023, 16:03
Milygawel wrote:PQ201
1. 19.35V
4. 19.35V
8. 18.16V
You probably switched the measurements between pin 1 and pin 8.

However, try to replace the charger chip with the same one as it was originally on this board.

#9 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by Milygawel 23 May 2023, 11:25
Niestety wymiana chargera nic nie zmieniła, kupić dla pewności jeszcze jedne czy szukać przyczyny gdzie indziej ?

#10 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by matic 24 May 2023, 20:56
Measure the following voltages to ground:
- On pins 2, 5 of transistor PQ203.
- On pin 2 of transistor PQ204.
- On pins 1, 2, 4, 5 of chip PU1901.

Transistor PQ204 pin count:
Image

#11 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by Milygawel 19 June 2023, 15:38
PQ203
2. 0V
5. 3.3V

PQ204
2. 0V

PU1901
1. 0V
2. 3V
4. 0V
5. 3.3V

#13 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by matic 20 June 2023, 08:22
- Measure the voltages to ground on all pins of chip PU201.
- Measure the voltages to ground on all pins of diode PD1903.
Diode PD1903 pin count:
Image

#14 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by Milygawel 20 June 2023, 14:57
PU201
1. 0.33V
2. 3.3V
3. 0v
4. 0V
5. 3.3V

PD1903
1. 0V
2. 0.33V
3. 0V

#15 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by matic 20 June 2023, 16:15
Milygawel wrote:PQ200
1. 19.35V
4. 9.21V
8. 19.35V
Are these measurements correct?

#16 Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


by Milygawel 15 April 2024, 08:54
Przepraszam że temat tak długo otwarty. Dostałem drugą płytę z takim samym objawem, PR102 miał z obu stron 3,3V ale pod mikroskopem zauważyłem że jest upalony, po wymianie laptop rozpoznaje zasilacz. W płycie z tego wątku okazało się również że jest upalony PR102 po wymianie laptop rozpoznaje zasilacz i normalnie ładuje. (PR102 33 0402 5%)

Re: DELL PRECISION 5530 nie rozpoznaje zasilacza


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