• Dell Inspiron 15 - brak reakcji na włącznik

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#1 Dell Inspiron 15 - brak reakcji na włącznik


by arjuredi 19 February 2019, 15:49
Płyta to Cedar_Intel-MB 13269-1. Tak, jak w temacie, laptop nie reaguje na włącznik, pobór 0A, żadna dioda się nie świeci. Przeprogramowałem na początek bios - bez zmian. Poniżej przedstawiam napięcia i rezystancję na poszczególnych cewkach:
PL4401 - 2,72V, 18,3MΩ
PL4801 - 0V, 193Ω
PL4701 - 0V, 223Ω
PL8202 - 0V, 40,3Ω
PL8201 - 0V, 40,3Ω
PL4501 - 0V, 22,3kΩ
PL4502 - 0V, 2,41kΩ
PL4902 - 0V, 506Ω.

Proszę o dalsze wskazówki.

Re: Dell Inspiron 15 - brak reakcji na włącznik


by Google Adsense [BOT] 19 February 2019, 15:49

#2 Re: Dell Inspiron 15 - brak reakcji na włącznik


by Lesio23 19 February 2019, 15:54
Mosfety za gniazdem zasilania sprawdź czy nie są zwarte.

#4 Re: Dell Inspiron 15 - brak reakcji na włącznik


by arjuredi 20 February 2019, 18:04
Tranzystory przy gnieździe sprawdzałem, nie wykazują uszkodzeń. Na PU4402 mam:
p.1-3 - 19,47V
p.4 - 3,31V
p5-8 - 19,45V

#5 Re: Dell Inspiron 15 - brak reakcji na włącznik


by matic 20 February 2019, 19:28
Measure the resistance to ground on resistor PR4402.
Measure the voltages to ground on pins 1, 4, 8 of PU4201.
Measure the voltages to ground on pins 2, 3, 6 of PQ4402.

#7 Re: Dell Inspiron 15 - brak reakcji na włącznik


by arjuredi 21 February 2019, 13:25
Resistance on PR4402 - 8,34MΩ
PU4201:
p.1 - 19,55V
p.4 - 3,21V
p.8 - 19,55V

PQ4402:
p.2 - 2,95V
p.3 - 16,77V
p.6 - 1,64V

PU4503:
p.3 - 2,97V
p.6 - 0,09V
p.9 - 2,29V
p.12 - 19.51V
p.13 - 1,11V
p.17 - 2,3V
p.19 - 0,05V
p.20 - 0,09V
The remaining pins have 0 volts.

#8 Re: Dell Inspiron 15 - brak reakcji na włącznik


by matic 21 February 2019, 23:39
Measure the resistances to ground on pins 3, 13 of PU4503.

#10 Re: Dell Inspiron 15 - brak reakcji na włącznik


by arjuredi 22 February 2019, 19:03
Resistance on PU4503:
p.3 - 208kΩ
p.13 - 1,11MΩ
When I disconnected the resistor R2403, the voltage 3.3v on pin 3 of PU4503 appeared.

#12 Re: Dell Inspiron 15 - brak reakcji na włącznik


by arjuredi 5 March 2019, 14:25
KBC replaced, mb is working. Thanks for Your help Machine.

Re: Dell Inspiron 15 - brak reakcji na włącznik


by Google Adsense [BOT] 5 March 2019, 14:25

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