Lenovo IdeaPad Gaming 3 15ACH6

[Skopsko]

Hello to all,

I need help regarding correct EC dump with the following problem explained below:

Original EC chip KB9022Q -D was shorted, so I replace it with another one, normally empty. I pay for EC dump file from another forum, but after programming, CPU fan is not working anymore and battery is no longer detected.
Previously everything was working.
So currently, I have wrong configuration table for the mentioned laptop above, battery is not detected beside that I have correct voltages for SDA/SCL, and 2 fan PWM is not active. (5v are present on CPU fan)

Configuration:
Lenovo IdeaPad Gaming 3 15ACH6
Board: LA-L171P REV:1A
EC: KB9022Q-D
dGPU model with NVIDIA GTX1650
2-Fan version (CPU + GPU separate control)
Backlit keyboard
Keyboard routing: JKB1
Battery SMBUS type: L2M3PC2
Charger/power management chip: BQ24780S

Kindly I need to extract EC dump file from main bios file.
Original bios bin file attached.

Thanks in advance!

[hoaca388]

Hello to all,

I need help regarding correct EC dump with the following problem explained below:

Original EC chip KB9022Q -D was shorted, so I replace it with another one, normally empty. I pay for EC dump file from another forum, but after programming, CPU fan is not working anymore and battery is no longer detected.
Previously everything was working.
So currently, I have wrong configuration table for the mentioned laptop above, battery is not detected beside that I have correct voltages for SDA/SCL, and 2 fan PWM is not active. (5v are present on CPU fan)

Configuration:
Lenovo IdeaPad Gaming 3 15ACH6
Board: LA-L171P REV:1A
EC: KB9022Q-D
dGPU model with NVIDIA GTX1650
2-Fan version (CPU + GPU separate control)
Backlit keyboard
Keyboard routing: JKB1
Battery SMBUS type: L2M3PC2
Charger/power management chip: BQ24780S

Kindly I need to extract EC dump file from main bios file.
Original bios bin file attached.

Thanks in advance!

Serial number ?

[Skopsko]

hoaca388 Please find attached picture.
Thank you!

[m1ch43lzm]

Try EC extracted from your BIOS, it's identical to the one extracted from GOG20305B.rom from BIOS update, there's 2 EC versions packaged in BIOS update from Lenovo website
S/N MP24K09C

[Skopsko]

I have programed EC chip with the file "star EC ENE", and still the same problem.
CPU fan is not working, and buttery is not detecting, also red charging light is blinking (previously was solid red light while charging). Beside these issues, laptop is booting fast into Windows.
Any suggest for resolving this problem?

[m1ch43lzm]

Schematics, post 15: https://www.badcaps.net/forum/troubl...22#post3519722
Check for shorts on EC_FAN_PWM2

Since there's 2 versions of EC firmware for this laptop model, i attach the other version