Hardware M92T36 or BQ24193

[eBejita]

hi! did you change m92t36 ic chip?
Have you already checked volts in pin 5 in m92t36 ic chip?

Yes...m92t36 ic is Ok...I think i have to change P13USB

 

[ollicnat]

if you have 3 or 6v in M92T36 and you are sure new battery was charged, it s P13USB like me.
The problem arrive with a defect original charger ( in my case ), the USB C connector was twisted or Third party charger

If you want i replace the chip

Thanks, I am not from USA and Europe, and I dont have 3 or 6v in M92T36.

 

[mattytrog]

Thanks, I am not from USA and Europe, and I dont have 3 or 6v in M92T36.

Check with charger plugged in.

 

[ollicnat]

Check with charger plugged in.

I have already cheked with original nintendo charger plug and dont received 3-6 volts.

 

[mattytrog]

I have already cheked with original nintendo charger plug and dont received 3-6 volts.

Ok next thing to check is battery voltage.

Plugged in and unplugged.

 

[Ratatattat]

Charging a Switch is very much like making love to a beautiful woman - Swiss Toni

Yep Plug it in and wait as long as you can.

 

[ollicnat]

Ok next thing to check is battery voltage.

Plugged in and unplugged.

ok. plug and unplug battery I got 3.73v with the console off and 3.61v with the console on.

 

[mattytrog]

ok. plug and unplug battery I got 3.73v with the console off and 3.61v with the console on.

Now check pin 6 of M92T36. Should be 3.3v when power pressed. If not, M92T36 dead.

 

[ollicnat]

Now check pin 6 of M92T36. Should be 3.3v when power pressed. If not, M92T36 dead.

thanks! maybe I need to change M92T36 because pin 6 does not received any volt.

 

[mattytrog]

thanks! maybe I need to change M92T36 because pin 6 does not received any volt.

It's probably shorted and shorting the whole 3v rail. Disconnect pin 6 then see if you get 3v on the board side. If you do, then m92t36 100% dead.

 

[Pintglass]

It's probably shorted and shorting the whole 3v rail. Disconnect pin 6 then see if you get 3v on the board side. If you do, then m92t36 100% dead.

Hi
I am in a similar position as the op,
I have a short on the 3V rail, how can i disconnect pin 6 of the M92T36 is it a case of removing the whole chip?

 

[WadsRUs]

Hi
I am in a similar position as the op,
I have a short on the 3V rail, how can i disconnect pin 6 of the M92T36 is it a case of removing the whole chip?

Pin 6 goes directly to a nearby cap - you could remove that cap instead of removing the chip. There's a possibility that pin 6 also goes elsewhere within the board so to be certain remove the chip but first if you just remove the cap and the short goes away at least you'll have a better idea what's going on.

 

[Pintglass]

Is pin 6 an input to the M92T36?

 

[WadsRUs]

Is pin 6 an input to the M92T36?

Just looked at the *datasheet - it's a 5 volt input.

*There isn't a datasheet for the M92T36, best alternative is the one for the BM92T30MWV - here ya go:

http://rohmfs.rohm.com/en/products/databook/datasheet/ic/interface/usb_pd/bm92t30mwv-e.pdf

 

[Pintglass]

Thanks for the link, but that's what i have been looking at. Is there no schematics for the board as i haven't been able to find any. I think if i removed the cap close to the M92T36 and my short went away then the cap would be the issue, which would be great.
Does the pmic provide the power to this pin?

 

[WadsRUs]

I'm not aware of any schematics for the Switch - Nintendo will of course have some but they're never going to release them of course.

 

[Pintglass]

Is there a datasheet for the P13usb IC ?

 

[connectconnect]

I just found a datafrief and some applications notes

https://www.diodes.com/search/?q=PI3USB31532&t=keyword&action_results=Go

This is the actual model:
https://www.diodes.com/products/con...otocol-switches/usb-switches/part/PI3USB31532

 

[mattytrog]

Pin 6 is 3v3. Not 5v as in 92A30

Pin 5 can be between 3 & 6v depending on which line the power detector has chosen on M92T36

 

[Pintglass]

Pin 6 is 3v3. Not 5v as in 92A30

Yeah the 3v3 rail is where ive got the short on, I've removed M92T36 and PI3USB but short is still present.
Does the PMIC provide this power rail?
I've been looking for a datasheet on the PMIC but not had any luck.
Is it OK to inject 3v3 into this rail to see if i can find anything with heat?