Hp ase30 la-c482p no vcc_gt

[NConstantinou]

Dear all
i have the above board
measuring all coils i have the correct volts except PLZ3
If i disconnect pin2 i have 3.3v pin1
if i solder pin2 of coil the resistance of the PLZ3 is 6homs with 0v.
i suspect that there is something short on the output of coil.

what voltage can i inject on the coils and what amperage should i use in order to find what is heating up!

Thanks

[mcplslg123]

Re: Hp ase30 la-c482p no vcc_gt

GFXCORE-max 0.7V you can inject but wont advise to do so. However, you can remove the gfxcore mosfet,coil and then inject 0.7V on the consumper side(the side going to cpu). If thats the only issue, board will boot. You can keep it at 1A

[NConstantinou]

Re: Hp ase30 la-c482p no vcc_gt

Finally i didn't inject voltage and i am trying to see where short is but
do you have any boardview for this board!

i noticed this trace of coil goes to NCP81208 pin 8 which has in diode mode 0.11v.
i checked the capacitors that is linked to pin8 look ok but it look like short is near cpu because is getting HOT.

Thanks

[SMDFlea]

Re: Hp ase30 la-c482p no vcc_gt

do you have any boardview for this board!

post your request here -> https://www.badcaps.net/forum/showthread.php?t=57294

[mcplslg123]

Re: Hp ase30 la-c482p no vcc_gt

PLZ3 at 6 ohms is perfectly fine and not shorted. The concept of reading short with low resistance has to be updated from to time with new gen SOC where even resistance of less then 2 ohms is not short. The steps you are taking may even kill the cpu unless you understand the risks well.

[Orang Gila]

I have a similar problem, the +VCC_CORE voltage is not present.
I have tried replacing PUZ2 but it has not yielded results.
The voltage on the PUZ2 leg:
1: 4.95 V
2: 2.01 V
3: 4.9 V
4: 5.1 V
5: 0
6: GND
7: 0
8: 0
I measured it with the PQZ2 and PLZ2 positions removed

PQZ2 has also been replaced but still zero

What else should I do? I'm confused