hi ,
motherboard M960 rev1.1 mbx223
doesn't start , no led , no power , no charge.

I check on power button 3v are no present
19v is present on PF1 and PL1.
19v is present on PQ2 but only on pin 1 to 4 , on pins 4 to 8 there's 0v (i change PQ2 it's the same)



i check SN608098:
no voltage (i don't have datasheet)

i check BQ24753A:
PVCC have 19v

Can you tell me where i have to check
i don't have schématic
thank you

SN608098 --> ISL6236

thank you.

i have check VCC , VIN they have 0v

я ставил вместо 608098 - 8206. именно на sony
но в обратной связи после дросселя стоит делитель с 5valvw ---61.8K---10K---0V
НАДО -10k замкнуть т.е 5valw---61.8k ---0v
иначе будет вышибать все что питается от 5v -вместе с ключами 7904.

да это 11нога 8206 или 608098

You need to find, who controlled PQ2. Usually it made battery-charger-controller (like MAX8724, MAX1908 or BQ24703) or circuit "ACIN" - signal talk him (charger), that DC-adapter connected to notebook and it enabled "second door" - your PQ2 or just open PQ2 using "ACIN" - all variants depend on realisation of motherboard power scheme .

i tried to shunt quicklly pin 1 with pin 4 , it made ​​sparks as a short circuit, is it normal ?

i have exactly the same situation, check resistence to ground on 28 leg of PU3 BQ24753 if it`s something close to 0 BQ24753 is dead.

and resistor PR656 2.2 Ohm dead as well.

hi ,
i have check PU3 , on pin 28 i have 40 Mohm and PR 256 is right 2.2
By sécurity i have change PU3 but it's the same.

so what voltages on legs 2,3,28 PU3 ?

i have check on PU3 :
pin 2 0v
pin 3 0v
pin 28 18.8v