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Re: Asus K513e prośba o identyfikację tranzystora PQL8702
by Google Adsense [BOT] • 21 August 2024, 15:42
Remove the coil PL8702 from the board and measure the resistances to ground on both pads on the place of this coil.
If the low resistance is present on the system side of coil (power rail "+3VA_DSW"), inject 3V from the laboratory power supply to this pad.
What electrical current flows from the laboratory power supply during the test?
If the low resistance is present on the system side of coil (power rail "+3VA_DSW"), inject 3V from the laboratory power supply to this pad.
What electrical current flows from the laboratory power supply during the test?
Rozlutowanie układu ze zdjęcia nie za wiele dało, to samo PU8803 (spadek o kilka omów). Zwora PSL8706 nie namierzona.
Ale namierzyłem też zwarcie na kondensatorach PC8304, po rozlutowaniu zwory PJP8304, zwarcie ustępuje. Próba zwarciowa nic nie pokazuje, ale z dostępnego mi boardview wynika, że napięcia idą na procesor??
Ale namierzyłem też zwarcie na kondensatorach PC8304, po rozlutowaniu zwory PJP8304, zwarcie ustępuje. Próba zwarciowa nic nie pokazuje, ale z dostępnego mi boardview wynika, że napięcia idą na procesor??
#12 Re: Asus K513e prośba o identyfikację tranzystora PQL8702 [SOLVED]
by matic • 24 August 2024, 11:47
dir wrote:Próba zwarciowa nic nie pokazuje, ale z dostępnego mi boardview wynika, że napięcia idą na procesor??What is an actual resistance to ground on shorted pad of jumper PJP8304?
True, this power rail goes to the APU hybrid. The low resistance on 3V power rail (coil PL8702) is also very likely caused by the APU, so the APU hybrid is unfortunately damaged almost for sure.
Re: Asus K513e prośba o identyfikację tranzystora PQL8702
by Google Adsense [BOT] • 24 August 2024, 12:14
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