• Acer Nitro 5 AN-515 LA-H501P Martwy

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#1 Acer Nitro 5 AN-515 LA-H501P Martwy


by psikus123 3 March 2025, 13:53
Witam kolegów
Laptop zupełnie martwy.
Po podłączeniu zasilacza serwisowego nie zapalają się żadne diody, pobór prądu 0,015A po zwarciu pinów 1 i 2 na gnieździe JKB1 Brak jakiejkolwiek reakcji nie rośnie pobór prądu.
Brak napięć na cewkach, zwarć też nie znalazłem
Jest napięcie +3VLP
KBC Na pinach 9,22,33,96,111,125 ma 3,3V
Wymieniłem KBC zaprogramował się prawidłowo i bez zmian.
Po podłączeniu zasilacza serwisowego z baterią pobór prądu jest 1,5A i ładuje baterię choć nie świeci się dioda ładowania.
Proszę kolegów o pomoc w diagnozie

Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by Google Adsense [BOT] 3 March 2025, 13:53

#2 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by matic 3 March 2025, 15:33
Hello!

- Measure the voltages to ground on pins 6, 19, 32, 67, 100, 104, 107, 110, 112, 115, 123 of KBC chip.

- Measure the voltages to ground on pins 114, 122 of KBC chip in the following cases:
a) Power button released.
b) Power button pressed.

#3 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by psikus123 3 March 2025, 15:46
Dziękuję matic za zainteresowanie.
Podłączony zasilacz napięcia KBC
6 - 0V
19 - 0V
32 - 0V
67 - 3,3V
100 - 0V
104 - 0,069V
107 - 0V
110 - 3,2V
112 - 3,1V
115 - 3,3V
123 - 0V

114 - 3,3V
122 - 0V

Power wciśnięty
114 - 0V
122 - 0V

#4 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by psikus123 5 March 2025, 08:57
Koledzy jakieś pomysły sugestie.

#5 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by tekort 5 March 2025, 09:46
Podaj rezystancje do masy na wszystkich cewkach płyty

#6 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by psikus123 5 March 2025, 10:11
PL301 - 4,7kΩ rośnie
PL501 - 15kΩ rośnie
PLB1 - MkΩ
PL1101 - 30,5Ω
PLW1 - 95Ω
PLV2 - 0,69Ω
PLV3 - 0,69Ω
PL1801 -3,3kΩ
PLH1 - 62,3Ω
PLA1 - 33,4Ω
PLZ4 - 5,5Ω
PLZ3 - 5,5Ω
PLZ2 - 5,5Ω
PLZ1 - 5,5Ω
PLG1 - 11,9Ω
PLM1 - 60Ω

#7 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by kylo625 5 March 2025, 11:04
Prawdopodobnie uszkodzone PCH, spróbuj podmienić.

#8 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by matic 5 March 2025, 12:38
- Which resistor is present on your board - PR504 or PR505?
- Measure the resistances to ground on pins 19, 122 of KBC chip.

#9 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by psikus123 5 March 2025, 12:46
Z wymianą PCH jeszcze się wstrzymam.
PR504 jest na płycie
PR505 - brak
KBC
pins 19,122 - MOhm-y

#10 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by matic 5 March 2025, 16:40
Which chip is present on your board - PU501 or PU502?

#11 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by psikus123 6 March 2025, 08:47
PU501 - Brak
PU502 - jest

#12 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by matic 6 March 2025, 10:22
Measure the voltages to ground on pins 1, 5, 9, 11, 12, 14, 15, 17 of chip PU502.

#13 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by psikus123 6 March 2025, 10:28
1 - 2,9V
5 - 19,6V
9 - 0V
11 - 4,47V
12 - 0,069V
14 - 0V
15 - 5V
17 - 3,3V

#14 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by matic 6 March 2025, 10:50
- Measure the resistance to ground on pin 12 of chip PU502.
- Measure the voltages to ground on both pins of resistor PR504.

#15 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by psikus123 6 March 2025, 10:56
PU502
12 - 3MOhm
PR504
0,069
3,17

#17 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by psikus123 6 March 2025, 11:46
PR504 sprawdziłem poza MB 2,2k - jest sprawny

#18 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by matic 6 March 2025, 13:22
Remove the capacitor PC516 from the board and remeasure the voltages to ground on both pins of resistor PR504.

#19 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by psikus123 6 March 2025, 13:30
Po zdjęciu PC516 Napięcia PR504:

0,069V
3,17V

#20 Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by matic 6 March 2025, 13:37
Also remove the chip PU502 from the board and remeasure the voltages to ground on both pins of resistor PR504.
If a voltage of 3V appears on both pins of this resistor, the chip PU502 is damaged.

Re: Acer Nitro 5 AN-515 LA-H501P Martwy


by Google Adsense [BOT] 6 March 2025, 13:37

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