• Acer Nitro N18C3 - Zwarcie na głównej lini zasilania

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#1 Acer Nitro N18C3 - Zwarcie na głównej lini zasilania


by Golima 7 December 2024, 15:16
Dzień Dobry

Płyta: EH5VF LA-H501P REV: 1A

Pierwszy mosfet PQB11 przebity, zdjęty. Dalej zwarcie. Rewizja wizualna, nic. Próba zwarciowa, przy 1V pobór 1A, nic się nie grzeje, poza raczej wydaje mi się, że procesor. Ponadto z ciekawości sprawdziłem prąd na cewkach od procesora i jest tam 0.7V. Czy można uznać, że procek jest spalony, czy jednak poszukać jeszcze czegoś?

edit. Chyba sobie poradziłem, w sumie zaczynam myśleć, skoro prąd wchodzi na cewki proca, tzn, że jakiś dual mosfet procka musi być przebity i faktycznie, zanalzłem kolejny przebity mosfet. Zdjąłem go. Zwarcie ustało. Teraz wstawie nowe i sprawdzę czy działa :)

edit2. Wymieniłem oba mosfety, laptop uruchamia się na pół sekundy, pobiera 0.4A i odcina go.
Jakieś pomysły?

Pozdrawiam

Re: Acer Nitro N18C3 - Zwarcie na głównej lini zasilania


by Google Adsense [BOT] 7 December 2024, 15:16

#2 Re: Acer Nitro N18C3 - Zwarcie na głównej lini zasilania


by matic 7 December 2024, 17:13
Hello!

- Measure the resistances to ground on all coils.
- Measure the voltages to ground on all coils for a short time, when the machine is turned on (power consumption is 0.4A). You will have to turn on the machine several times, to measure all of the voltages.

Re: Acer Nitro N18C3 - Zwarcie na głównej lini zasilania


by Google Adsense [BOT] 7 December 2024, 17:13

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