Replace the 2 mosfets linked to the battery charging - high side and low side.
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hi, I already changed them but no result, I started measuring all over, and noticed I have 5.87V at PT8901, but only 0.9V at the gate of PQH8902 and pin 1 of PR8969.
The resistance between PT8901 and the mosfet and resistor is 17,5KOhm.
If i'm not mistaken in reading the schematic and boardview this should be a direct trace with very low resistance.
Is it safe to make a bridge between PT8901 and pin 1 of the resistor or to the gate of PQH8902 ?Attached FilesComment
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Between PQH8902 GATE and PU8900 Pin 26, the resistance should be zero, if this was the question.
PR8969 is a 10 KOhms resistor between HIDRV (Pin 26) and PHASE (Pin 27) and has nothing to do with the connection between the Mosfets GATE and the Charging Controller.Comment
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Indeed the resistance of the circuit should be zero, but it is 17.5KOhm.
I understand the 10k resistor has nothing to do with the connection between mosfet gate and charging controller. But it is easier for me to solder a jumper wire to pin 1 of the resistor than on the gate of the mosfet. (since these pins are in the same circuit).
Anyway I'm going to jump this with a wire and testComment
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Fixed !
The jumperwire did the trick.
Thanks for everyone who guided me.Comment
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hello,
if you can help me, i have mainboard asus g531gw Rev 1.6 with short and no power
i have found short on C3907 (PVDD_AMP) and remove it
Actually machine works but battery is not charging. I have test with new one and i have too replace BQ24780S (charging IC) and same problem.
It's not 1st time when i remove short after the battery is not detect
On mybook i know we can make jumper beetween two lines for recognised this one
do you have solution for pc and actually this mainboard? Thanks for your help
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