Cześć, mam takiego MacBooka po innym serwisie, mieli wymienić podświetlenie klawiatury i oddali sprzęt bez obrazu, zarówno na zewnętrznym jak i wewnętrznym ekranie. Płyta startuje i uruchamia się system bo touchbar się zaświeca ale kompletnie nie ma obrazu i nie ma zasilania grafiki. Brak zwarć na cewkach GPU i VRAM, gdy płyta się uruchamia są tam przez ułamek sekundy skoki napiecia, to samo na sygnałach VR0-VR4_PGOOD przy układzie U9801 - wygląda więc jakby płyta chciała odpalić te napięcia ale z jakiegoś powodu je wyłącza.
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Re: MacBook A2141 płyta 820-01700 brak obrazu brak zasilania GPU
by Google Adsense [BOT] • 11 April 2024, 23:32
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