ASUS E410MA no 5v/3v on board.

someonenotyou

Join Date: Feb 2021

Posts: 65

Country: LV
#1

ASUS E410MA no 5v/3v on board.

08-24-2025, 12:35 PM

Hi.
I have a ASUS laptop with board number E410MA, which does not power up.
By the looks of things, it does not generate 5v, 3v, 1.8v and 1.2v.

The main power rail is there - 19.5V is present and goes to every IC.

By measuring various components, I found these readings:

EC_RST# - 2,7V
RTEST# - 2,8V
RTC_RST# - 2,8V

+VCCRTC_3P3 - 2,85V
+RTCBAT - 3V

P_CHG_VDD_20 - 5V
P_CHG_ACOK_10 - 5V

From the battery I get 3V at RTCBAT, but 0V on main connectors when connected to the board.

I have a boardview of the board, but I could not find the schematic, so I am at the loss.
Where should I start to look?

Thank you.

Boardview file - https://www.badcaps.net/filedata/fetch?id=2128752
Tags: None
mon2

Badcaps Legend

Join Date: Dec 2019

Posts: 15863

Country: Canada
#2

08-24-2025, 02:27 PM

Which connector is 0v on the board ?
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someonenotyou

Join Date: Feb 2021

Posts: 65

Country: LV
#3

08-24-2025, 02:45 PM

Originally posted by mon2

Which connector is 0v on the board ?

BAT_CON does not give any voltage to the board.
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mon2

Badcaps Legend

Join Date: Dec 2019

Posts: 15863

Country: Canada
#4

08-24-2025, 06:09 PM

Share the topside markings of PU8901 = battery charger IC.
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someonenotyou

Join Date: Feb 2021

Posts: 65

Country: LV
#5

08-25-2025, 01:45 AM

Originally posted by mon2

Share the topside markings of PU8901 = battery charger IC.

The markings are:
intersil
9238CH
W213E3
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ASUS E410MA no 5v/3v on board.

ASUS E410MA no 5v/3v on board.

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