Lenovo Slim 3 14IGL05, RT5077A 1.8VALW missing

[ch3nzu]

Hello guys,
I need some help here,
I have Lenovo slim 3, turn on, but no display.
For sometime it's can turn on for about 3 minutes, then its shutdowm itself, after than I cannot turn on the laptop again.
When i checked, i found that my 1.8VALW is missing in Bios Chip pin no. 8.
I found that 1.8VALW is from RT5077A. Already check VIN
VIN1_1/VIN1_2 5.1V
VOUT1 0V
VIN3_1/VIN3_2 5.1V
VOUT3 0V
VIN4 5.1V
VOUT4 0V (for 1.8VALW)
VIN5 5.1V
VOUT5 0V (for 1.2VALW)
VCC 5.1V
VSYS 14.19V
VIN_CT 20.2V
PIN30 PMIC_EN 3.35V

What should i check? Is this mean RT5507A is bad and need to replace?

[whaldsz]

Re: Lenovo Slim 3 14IGL05, RT5077A 1.8VALW missing

Have you checked if VSYS and VIN_CT is present?

[ch3nzu]

Re: Lenovo Slim 3 14IGL05, RT5077A 1.8VALW missing

Have you checked if VSYS and VIN_CT is present?

yes, there was present.
VSYS 14.19V and
VIN_CT 20.21V

Note :
If I plug in adaptor power in 2 hours later, the laptop can turn on, 1.8ALWS and 1.2ALWS is present normally, but only for 3-5 minutes, and its shutdown again.

[Sephir0th]

Re: Lenovo Slim 3 14IGL05, RT5077A 1.8VALW missing

Then the issue might be later in the sequence. VCC_CORE for example.

[ch3nzu]

Re: Lenovo Slim 3 14IGL05, RT5077A 1.8VALW missing

update

Change the RT5077A with a new one, and its back normal. Thanks.