• Lenovo legion 5 pro nm-d562 brak tranzystora

It is currently 14 August 2025, 01:56

Lenovo legion 5 pro nm-d562 brak tranzystora

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#1 Lenovo legion 5 pro nm-d562 brak tranzystora

by Sashamarzor • 5 August 2025, 19:13
Laptop trafil z usterka nie dzialaja porty usb 2.0 (wszyakie)
Zwarty byl kondensator na lini 5valw_hub ktora zasila uklad uu136 ktory reguluje porty usb
Uszkodzony rowniez byl tranzystor qu46 (p kanał 20v)
Układu nie mam ani zamiennika nigdzie pod ręką a klijent wyjezdza I potrzebuje laptopa na juz...
Według schematu producent przewidział zasilanie
5valw_hub przez 5valw proszę expertow na zerknięcie na schemat czy moge w mijsce Ru140 wstawic rezysor 0 lub 1 ohm???
I dać zaslinie na ten uklad usb hub z głównej lini 5v ???
I bez tranzystora qu46??
Dziękuję za podpowiedź

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Re: Lenovo legion 5 pro nm-d562 brak tranzystora

by Google Adsense [BOT] • 5 August 2025, 19:13

#2 Re: Lenovo legion 5 pro nm-d562 brak tranzystora

by wof • 6 August 2025, 14:06
variant with RU140 is for testing purposes only, not for daily usage as +5VALW_HUB would in case of some failure on USB directly overload +5VALW line (MB is using USB_HUB_PWR_EN signal to enable/disable usb ports).
Better solution right now is to use small external USB-C hub...and finish repair correctly later.

Re: Lenovo legion 5 pro nm-d562 brak tranzystora

by Google Adsense [BOT] • 6 August 2025, 14:06
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