• MSI PULSE GL66 motherboard MS 15811 ver: 1.1 charging issue

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#1 MSI PULSE GL66 motherboard MS 15811 ver: 1.1 charging issue


by valieromarco 24 December 2024, 00:25
Actually I didn’t find any schematic.
This motherboard works with power supply only.
It comes with BQ 24780 replaced by someone and I have to fix some pads.
Mosfet missing in the picture goes shorted just connect the battery.
Seems not component shorted.


Image

Re: MSI PULSE GL66 motherboard MS 15811 ver: 1.1 charging issue


by Google Adsense [BOT] 24 December 2024, 00:25

#2 Re: MSI PULSE GL66 motherboard MS 15811 ver: 1.1 charging issue


by matic 24 December 2024, 19:31
Hello!

Your board seems spilled - some components are corroded:
Image
All corroded components must be replaced. Check the whole board for more corroded components.

#3 Re: MSI PULSE GL66 motherboard MS 15811 ver: 1.1 charging issue


by valieromarco 26 December 2024, 16:58
Hello
I replaced corroded parts.
How can I test mosfet zone, because I can’t insert mosfet and it goes shorted every time.

#4 Re: MSI PULSE GL66 motherboard MS 15811 ver: 1.1 charging issue


by matic 26 December 2024, 20:16
Replace both transistors - PQ36 and PQ37 regardless of whether one of them seems functional or not.
Then measure the voltages to ground on all pins of battery connector and on pins 1, 4, 5 of transistor PQ33 in the following cases:
a) Power supply connected only (without the battery).
b) Battery connected only (without the power supply).

#5 Re: MSI PULSE GL66 motherboard MS 15811 ver: 1.1 charging issue


by valieromarco 27 December 2024, 00:14
I replaced both transistors
Battery pin with battery connected

Pin 1-2=9 ,63V
Pin 3= 0V
Pin 4= 3,3V
Pin. 5= 3,3V
Pin 6= 0,3V

PQ33 Mosfet pin Battery only

1-2-3 =- 9,63V
4= 0V
5-6-7-8 = 9,63V

With power supply only motherboard auto power on.

Battery pin

1-2 = 0,33V
3= 0V
4= 3,3V
5= 3,3V
6 = 3,3V

PQ 33 Mosfet pin power supply only

1-2-3 = 19V
4 = 19V
5-6-7-8 = 0,33V

#6 Re: MSI PULSE GL66 motherboard MS 15811 ver: 1.1 charging issue


by matic 27 December 2024, 09:11
Replace the battery.

#7 Re: MSI PULSE GL66 motherboard MS 15811 ver: 1.1 charging issue


by valieromarco 27 December 2024, 10:14
Should the circuit be ok?

#8 Re: MSI PULSE GL66 motherboard MS 15811 ver: 1.1 charging issue


by matic 28 December 2024, 17:44
Yes, it seems the board is fine.

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