• Acer 515-51g LBSS139WT1G jaki zamiennik

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#1 Acer 515-51g LBSS139WT1G jaki zamiennik


by artmon 26 November 2023, 21:50
Witam.
Proszę o pomoc w ustaleniu jaki zamiennik mogę wstawić za układ LBSS139WT1G.Mam brak ładowania,laptop to Acer 515-51g
Płyta
LA-E892P
rev.1A
Widać że układ był już wymieniany ale jest inny niż na schemacie.

Re: Acer 515-51g LBSS139WT1G jaki zamiennik


by Google Adsense [BOT] 26 November 2023, 21:50

#2 Re: LBSS139WT1G jaki zamiennik


by matic 26 November 2023, 23:02
Hello!

What is the designation (PQxxx) of the system you are looking for a replacement?

#3 Re: LBSS139WT1G jaki zamiennik


by artmon 26 November 2023, 23:04
PQ201

#4 Re: LBSS139WT1G jaki zamiennik


by matic 26 November 2023, 23:19
artmon wrote:układ LBSS139WT1G
According to my schematic the PQ201 is actually LBSS139LT1G.

As for the replacement, you can use the transistor 2N7002.
Datasheet attached.

artmon wrote:Widać że układ był już wymieniany ale jest inny niż na schemacie.
It's possible that it was previously replaced with the given transistor.

By the way, this transistor goes bad very rarely. Check which transistor exactly is currently soldered to the place of PQ201. If it's a suitable replacement; are you sure it's really damaged?



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#5 Re: LBSS139WT1G jaki zamiennik


by artmon 26 November 2023, 23:44
Wlutowany jest dokładnie LBSS138LT1G

#6 Re: LBSS139WT1G jaki zamiennik


by matic 26 November 2023, 23:57
This one is also a suitable replacement.
Check, if it's actually damaged or not.

If it's fine, make sure the switch SWG1 is activated (pressed), when the machine is assembled together, otherwise the battery is disabled and will not charge.
Image

#7 Re: LBSS139WT1G jaki zamiennik


by artmon 27 November 2023, 11:40
Nie wszystkie płyty mają obsadzone SWG1 u mnie nie ma tego włącznika od samego początku i raczej nigdy nie było

#8 Re: LBSS139WT1G jaki zamiennik


by matic 27 November 2023, 11:50
- Check the continuity between pin 3 of transistor PQ201 and ground.
- Measure the voltages to ground on pins 1, 2 of transistor PQ201.
Transistor PQ201 pin count:
Image

#9 Re: LBSS139WT1G jaki zamiennik


by artmon 27 November 2023, 13:51
PQ201
pin 3 - brak masy
pin 2 - 2,96v
pin 1 - 0v
Pomiar zrobiony bez baterii

#10 Re: LBSS139WT1G jaki zamiennik  [SOLVED]


by matic 27 November 2023, 14:37
artmon wrote:PQ201
pin 3 - brak masy
And that's wrong.
One of the components - switch SWG1 or resistor PR217 is most likely torn off the board.
One of these two components must be present on the board. Check which one is missing.

#11 Re: Acer 515-51g LBSS139WT1G jaki zamiennik


by artmon 27 November 2023, 16:44
Wstawiłem rezystor pr217 laptop zaczął normalnie się włączać i ładować baterię.Dziękuję kolego matic za pomoc.

Re: Acer 515-51g LBSS139WT1G jaki zamiennik


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