Re: Asus C433T not powering on or charging

Is a ping allowed on this forum?
Apologies if not...

Re: Asus C433T not powering on or charging

I'm reasonably sure I can identify 6 SMT inductors here

Inductor # / Volts / Ohms across / Ohms to GND
1 / 0 (< 5mV) / 0R1 / 330k
2 / 0 (< 5mV) / 0R1 / 8R2
3 / 0 (< 5mV) / 0R1 / 12R
4 / 5.14 V / 0R1 / 53k
5 / 0 (< 5mV) / 0R1 / 24R
6 / 0 (< 5mV) / 0R1 / 630R

(#6 is the one not marked in the photo, close to #2)

Volts measured wrt USB-C shell, with battery connected and USB-C high current charger connected.
Ohms measured with charger...

Re: Asus C433T not powering on or charging

I'm really struggling to identify the Mosfets - there are very few 3 terminal devices on the board. I can see an Intersil ISL9238 which is an NVDC interface but nothing anywhere near it that looks like a Mosfet to me.

Two pictures uploaded and happy to provide more.

Any advice very welcome please.

Cheers,
Richard...

Re: Asus C433T not powering on or charging

Will take a day or two while I get hold of a USB Microscope but will post back here as soon as I can, thanks.

Hi All
New member here with a friend's Asus C433T not powering on or charging. No sign of physical or electrical damage, machine was put to sleep one evening and just wouldn't come back on. With charger disconnected, only very small voltages (<1V) anywhere; with charger connected 5V and 3-ish V appear in multiple locations (including battery red & black) but "charge" LED remains Off (as do all others) and power button (and hard reset sequence) have no effect.

Is it possible that the battery is too flat for the charging circuitry to work and for some reason...

Re: ASUS ChromeBook C434T not powering on

Hi All
New member here with a friend's C434T not powering on or charging. I suspect the battery is too flat for the charging circuitry to work and for some reason (probably safety, given what these batteries can do...) that prevents charging.

@y00kileet - please can you be more specific about where you injected the current?

I did wonder if it would be better to remove the battery for charging, when I did so I measure < 1V between red and black leads. I assume these are + and - battery connections -...