hp pavilion g6 R33 not not turning on

[Zilicon]

Please help!!!
The above motherboard came with the main +vin voltage shorted. I had it cleared and faulty components replaced. now, the DC led light glows but the system does not start.

3.3v is present at the power switch, and there's also a good connection to the EC (U14) pin 19 and there is also a good connection to the resistor at the RAM slot area with voltage appearing.

i noticed that the DC power leds flashes three times when the power button is pressed with just the battery plugged in, it won't flash when plugged in.

everything seems good on the board, both +3vpcu and +5vpcu are present at pu8 but i noticed if i apply pressure around the area the system starts with vcore present.

i decided to change the pu8, only for the dc led light not to glow again, i checked the voltage at the pins, I noticed +3vs5 at pin 7 is missing, the resistance to ground is very low, less than 15 ohms to ground, i traced the short to pl25; pq53 has blown already.

i disconnected the pl21 coil from the pad and applied 3v at the pad of +3vs5 to possibly clear the shorts or at least know where the problem is, to my surprise the PCH (u32) heat up, the resistance gone to zero, i increased the voltage to 3.5 hoping it will be able to clear it, but same result. it only resulted into the pch heating up very badly.

please i need your assistance as i do not know what to do again.

thank you!

[piernov]

Re: hp pavilion g6 R33 not not turning on

As said a lot of times already, PCH warming up when injecting on 3.3V rail = dead PCH.

[Zilicon]

Re: hp pavilion g6 R33 not not turning on

As said a lot of times already, PCH warming up when injecting on 3.3V rail = dead PCH.

I was wondering why should the pch gets so hot, and it is not the voltage goes straight the pch.

i noticed C497 was fizzling when i poured isopropyl alcohol on the region.

can reballing resolve the problem