• Asus FX506LM, płyta DABKXDMB8F0 - zwarcie w linii 51225_LDO3

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Asus FX506LM, płyta DABKXDMB8F0 - zwarcie w linii 51225_LDO3

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#1 Asus FX506LM, płyta DABKXDMB8F0 - zwarcie w linii 51225_LDO3

by kuras00 • 14 January 2025, 14:32
Laptop trafił do mnie ze zwarciem na PU9, po wylutowaniu ustąpiło, zamontowałem nowy układ - otworzyły się bramki PQ33 i 34, dalej brak 3 i 5V grzeje się PU9.
Wylutowałem układ sprawdziłem wyprowadzenia i bingo zwarcie w 51225_LDO3
Ściągnąłem PC143 zwarcie zostało
Ściągnąłem PR227 żeby wykluczyć PU12, zwarcie zostało od strony pinu 2
Zrobiłem próbę zwarciową, ale nie mogę zlokalizować przywarcia (TU1 + drobnica dookoła zimne/ PEC61 nieobsadzony/ reszta nie jest bezpośrednio podłączona pod GND).

Podpowie ktoś gdzie szukać dalej?

Re: Asus FX506LM, płyta DABKXDMB8F0 - zwarcie w linii 51225_LDO3

by Google Adsense [BOT] • 14 January 2025, 14:32

#2 Re: Asus FX506LM, płyta DABKXDMB8F0 - zwarcie w linii 51225_LDO3

by matic • 14 January 2025, 15:17
kuras00 wrote:zwarcie w 51225_LDO3
Hello!
What's an actual resistance to ground on this power rail?

kuras00 wrote:Zrobiłem próbę zwarciową, ale nie mogę zlokalizować przywarcia
At what electrical current did you perform the test? And what is the voltage reading from the laboratory power supply at this current?

#3 Re: Asus FX506LM, płyta DABKXDMB8F0 - zwarcie w linii 51225_LDO3

by kuras00 • 14 January 2025, 15:23
Cześć,

matic wrote:Hello!
What's an actual resistance to ground on this power rail?


0 ohm

matic wrote:At what electrical current did you perform the test? And what is the voltage reading from the laboratory power supply at this current?


1 i 3V /5A
full short

#4 Re: Asus FX506LM, płyta DABKXDMB8F0 - zwarcie w linii 51225_LDO3

by matic • 14 January 2025, 17:22
Please, post a clear picture of how the test wires are soldered to the board.

#5 Re: Asus FX506LM, płyta DABKXDMB8F0 - zwarcie w linii 51225_LDO3

by kuras00 • 15 January 2025, 10:24
matic wrote:Please, post a clear picture of how the test wires are soldered to the board.


To już nie będzie potrzebne. Wyszło na to, że PCH padł.

Image

Re: Asus FX506LM, płyta DABKXDMB8F0 - zwarcie w linii 51225_LDO3

by Google Adsense [BOT] • 15 January 2025, 10:24
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