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Re: Acer AN515-54 EH50f LA-H431P Zwarcie na głównej linii 19V
by Google Adsense [BOT] • 5 February 2024, 16:32
ksimon wrote:PLV2-1 OHMOne of the DrMOS chips PUV2, PUV3 or PUV4 is damaged. To find out which one, remove the coils PLV2, PLV3, PLV4 one by one form the board and after removing each of them measure the resistance to ground on 19V power rail. When you remove the coil near the damaged DrMOS chip, the resistance to ground on 19V power rail should significantly increase (to the kΩ range or greater).
PLV3-1 OHM
PLV4-1 OHM
#6 Re: Acer AN515-54 EH50f LA-H431P Zwarcie na głównej linii 19V
by ksimon • 14 February 2024, 12:43
Po wylutowaniu cewek okazało się, że uszkodzony był PQZ2. Zamówiłem, wymieniłem.
Teraz zwarcie zniknęło, baterię ładuje, procesor, graficzna są ciepłe i wentylator pracuje poprawnie, czyli włącza się , gdy jest mu ciepło.
Ale brak obrazu po włączeniu, czyli wygląda na to, że laptop się poprawnie nie odpala. Co zrobić?
Teraz zwarcie zniknęło, baterię ładuje, procesor, graficzna są ciepłe i wentylator pracuje poprawnie, czyli włącza się , gdy jest mu ciepło.
Ale brak obrazu po włączeniu, czyli wygląda na to, że laptop się poprawnie nie odpala. Co zrobić?
Re: Acer AN515-54 EH50f LA-H431P Zwarcie na głównej linii 19V
by Google Adsense [BOT] • 8 March 2024, 08:10
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