• Lenovo Yoga Pro 9 161RP8 KYG85 NM-F121 - spalony sterownik zasilania CPU MP2964R

It is currently 14 December 2024, 05:48

Lenovo Yoga Pro 9 161RP8 KYG85 NM-F121 - spalony sterownik zasilania CPU MP2964R

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#1 Lenovo Yoga Pro 9 161RP8 KYG85 NM-F121 - spalony sterownik zasilania CPU MP2964R

by Vogelek23 • 20 June 2024, 11:51
Witam. Na stole tytułowy Lenovo Yoga Pro 9 161RP8, płyta KYG85 NM-F121 ze spalonym sterownikiem zasilania CPU PU4801 (MP2964R). Płyta nie włącza się, pobiera 10-15mA po podłączeniu zasilania. Chciałbym ten układ wymienić, ale nie ma do niego żadnej dokumentacji, toteż nie wiem, czy nowy układ wymaga jakiegokolwiek programowania, a jeśli tak, to czym i jak to zrobić. Układ jest dostępny w Chinach (Aliexpress), zamówiłem już kilka sztuk.

Czy ktoś ma wiedzę, bądź już wymieniał taki układ na nowy z Chin, i jest w stanie powiedzieć, czy taka wymiana zadziała? Klientowi bardzo zależy na naprawieniu komputera. Za konkretne podpowiedzi, które potwierdzą się w trakcie naprawy, przewiduję nagrodę: 50 Punktów, z możliwością zamiany na 50zł przelewem (bank lub PayPal).

Re: Lenovo Yoga Pro 9 161RP8 KYG85 NM-F121 - spalony sterownik zasilania CPU MP2964R

by Google Adsense [BOT] • 20 June 2024, 11:51

#2 Re: Lenovo Yoga Pro 9 161RP8 KYG85 NM-F121 - spalony sterownik zasilania CPU MP2964R

by wof • 21 June 2024, 09:21
you can try documentation for MP2965 https://www.monolithicpower.com/en/prod ... p2965.html ...it is also qfn48 - compare pinout on you board with description in pdf (also on this page).

"The MP2965 provides an on-chip EEPROM to store and restore device configurations. Device configurations and fault parameters can be easily programmed or monitored via the PMBus/I2C interface."

MPS are programmed using EVKT-USBI2C-02 https://www.monolithicpower.com/en/evkt-usbi2c-02.html ...but original flash dump would be hard to find/get - best chance is to get same mobo and make dump self.

#3 Re: Lenovo Yoga Pro 9 161RP8 KYG85 NM-F121 - spalony sterownik zasilania CPU MP2964R

by wof • 25 June 2024, 08:35
..found schematic for MP2964
Image

Re: Lenovo Yoga Pro 9 161RP8 KYG85 NM-F121 - spalony sterownik zasilania CPU MP2964R

by Google Adsense [BOT] • 25 June 2024, 08:35
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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