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

It is currently 14 December 2024, 06:34

Lenovo Ideapad 100-15IBY can't switch on

 Forum rules: Click here to view the forum rules

  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
  2. Topic message should contain: the PCB marking code (required in case of hardware repairs), an extended description of problem, things you have checked/replaced/measured, your conclusions and the question. If you are not able to find the PCB marking code, please read THIS TOPIC. If you still cannot locate the PCB markings, please upload a clean, both-side photos of the mainboard - it is required to remove any films, modules or brackets possibly covering these markings.
  3. Before posting a new topic please read all topics in TRAININGS subforum and make a preliminary diagnostic based on the content of those trainings.
  4. Uploading of any complete schematics, BIOS / firmware files or any other kind of documentation, or linking to 3rd party websites with such files, is STRICTLY PROHIBITED. You can only upload the small portion of documentation or, link to BIOS file on UNVERIFIED BIOS FILES subforum, which simplifies the diagnostics/repair. You are not allowed to upload more then one complete page of instruction/schematic per single topic. The file you upload must not contain any watermarks, "confidential" markings, links or email addresses and cannot be password-protected.
  5. It is only permitted to describe one faulty device per single topic - you should always open a new topic for each subsequent device.
  6. Requesting of the full schematics, BoardView files, BIOS files or any other kind of documentation is NOT ALLOWED in this subforum. If you need to ask for any of these, you should open a new topic in DOCUMENTATION/BIOS REQUEST subforum.

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

by cygron • 31 July 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

by Google Adsense [BOT] • 31 July 2024, 10:35

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

by Vogelek23 • 31 July 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

by cygron • 1 August 2024, 13:28
cygron wrote: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

by Vogelek23 • 2 August 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

by cygron • 3 August 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

by Vogelek23 • 3 August 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

by cygron • 3 August 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

by cygron • 5 August 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

by Google Adsense [BOT] • 5 August 2024, 09:17
Similar Topics
  Lenovo Ideapad 100-15IBD turns on for a second and stops
  Lenovo Ideapad 100-15IBD NM-A681 REV 1.0 nie uruchamia się  [SOLVED]
Asus X555QG can't switch on
  Asus VivoBook X540YA can't switch on  [SOLVED]
Dell Inspiron 15 3543 can't switch on
Switch Linksys LGS116P-EU - identyfikacja przetwornicy

Who is online

Users browsing this forum: No registered users and 3 guests

_______________________________
All rights reserved. Unauthorised copying of this website's content or any of its part is strictly forbidden.
Any trademarks, brand names, products or services published on this website belong to their legal owners, are copyrighted and used for information purposes only.