• Lenovo Ideapad 100-15IBY can't switch on

Danes je 10 Januar 2025, 14:35

Lenovo Ideapad 100-15IBY can't switch on

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  1. Naslov teme mora vsebovati: proizvajalca naprave, poln model in kratek opis okvare.
  2. Sporočilo teme mora vsebovati: oznako tiskanega vezja (v primeru popravil strojne opreme), razširjen opis okvare, kaj je bilo preverjeno, zamenjano in/ali izmerjeno, sklep in vprašanje. Če ne morete najti oznake tiskanega vezja, morate prebrati TO TEMO. Če še vedno ne najdete oznake, prosim objavite kakovostne fotografije obeh strani matične plošče - potrebno je odstraniti vse folije in module, ki bi lahko zakrivali te oznake.
  3. Pred objavo nove teme, preberite vse teme v podforumu USPOSABLJANJA, in naredite predhodno diagnostiko na podlagi vsebine teh usposabljanj.
  4. Nalaganje celotnih navodil/shem, BIOS / firmware datotek, ali objavljanje povezav, ki vodijo do drugih spletnih strani s takšnimi datotekami, je SROGO PREPOVEDANO. Lahko objavite le majhen del navodil/shem, ali povezavo na BIOS datoteko v podforumu NEVERIFICIRANE DATOTEKE BIOS/EFI. V eni temi ne smete objaviti več kot eno stran navodil/shem. Datoteka ne sme vsebovati vidnih žigov "zaupno",, e-poštnih naslovov ipd.
  5. V eni temi lahko opišete SAMO eno napravo. Za vsako drugo okvarjeno napravo morate odpreti novo temo.
  6. Zahteve za sheme, boardview, fotografije matičnih plošč, datoteke BIOS-a ali servisne priročnike za storitve NISO DOVOLJENE. Če želite vprašati za katero koli od teh, odprite novo temo v podforumu ZAHTEVA ZA DOKUMENTACIJO & DATOTEKO BIOS/EFI.

#1 Lenovo Ideapad 100-15IBY can't switch on

Napisal/-a cygron • 31 Julij 2024, 10:35
Model : Lenovo Ideapad 100-15IBY
Board id: AIVP1/AIVP2 LA-C771P Rev 1.0

Laptop deosn't respond when press power key. Power Key is ok (3.3V). 3.3V ALW, 5V ALW, 1.8V ALW, 1.05V ALW all are ok. LID_SW is ok (3.3V). RTC_RST is ok (3.3V). EC_ON is 3.3V. PBTN_OUT# is 1.8V. EC_RST is 3.3V. But with or without press power key, RSM_RST is 0V. BIOS flashing can't solve the problem. Need help.

Re: Lenovo Ideapad 100-15IBY can't switch on

Napisal/-a Google Adsense [BOT] • 31 Julij 2024, 10:35

#2 Re: Lenovo Ideapad 100-15IBY can't switch on

Napisal/-a Vogelek23 • 31 Julij 2024, 19:43
Measure the voltage to ground on pin 100 of EC controller (UB1) after pressing power button. If you read 1.8V or 3.3V then disconnect the charger, wait 15 seconds, connect the charger back, connect the oscilloscope to pin 122 of EC (PBTN_OUT# signal), press the power button and check if you have a 60ms wide negative pulse about 200ms after releasing the power button.

#3 Re: Lenovo Ideapad 100-15IBY can't switch on

Napisal/-a cygron • 1 Avgust 2024, 13:28
cygron napisal/-a:with or without press power key, RSM_RST is 0V.


Voltage to ground on pin 100 of EC controller (EC_RSMSRT) is 0V with or without press power key. PBTN_OUT# is 1.8V. Unfortunately, i don't have any oscilloscope.

#4 Re: Lenovo Ideapad 100-15IBY can't switch on

Napisal/-a Vogelek23 • 2 Avgust 2024, 10:23
Please measure the voltage to ground on pin 114 of EC controller in three steps:
  1. after connecting the charger (battery not connected),
  2. while pressing and holding the power button,
  3. after releasing power button.
Then disconnect all the power, wait 1-2 minutes and measure the resistance to ground on pin 100 of EC controller.

#5 Re: Lenovo Ideapad 100-15IBY can't switch on

Napisal/-a cygron • 3 Avgust 2024, 10:26
Pin 114 - 3.27V ( Without press power key / After releasing power key )
Pin 114 - 0V ( While pressing and holding the power button )
Resistance to ground on Pin 100 - 99K

#6 Re: Lenovo Ideapad 100-15IBY can't switch on

Napisal/-a Vogelek23 • 3 Avgust 2024, 12:31
So either the EC controller or its firmware is faulty. Please reflash the EC firmware first (this one is programmable). You can extract the EC firmware directly from your BIOS dump (address range: 0x500000-0x51FFFF). Please note that EC firmware contains DMI data (address range: 0x1F000-0x1F3FF). If your BIOS dump does not have these, you will need to fill them in manually, after confirming that the EC firmware did the trick.

#7 Re: Lenovo Ideapad 100-15IBY can't switch on

Napisal/-a cygron • 3 Avgust 2024, 13:15
Unfortunately, i don't have EC programmer. I only have RT809F Programmer. Can i replace EC chip from same model?

#9 Re: Lenovo Ideapad 100-15IBY can't switch on

Napisal/-a cygron • 5 Avgust 2024, 09:17
Customer took back the laptop. So case close. By the way, thanks for your helping. Best regards.

Re: Lenovo Ideapad 100-15IBY can't switch on

Napisal/-a Google Adsense [BOT] • 5 Avgust 2024, 09:17
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