[SOLVED]820-00165 - Short to ground on PPBUS_G3H

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menatwork

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I check and i don't see any sign of liquid in this board.
I have short to ground on PPBUS_G3H (F7140 - Pin 2).
I plugged the charger and check if i can find some warm component, no luck...
So, i inject Voltage on F7140 pin 2 and nothing happen, but i notice the cable i use for inject voltage start get warm.

I removed:
- R5450
- Q5500
- R7006
- Q3080
- L7130
- Q7130

No luck. The short still there.

Do you guys have any hint for me?

Thank you
 
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menatwork

New member
Yes, i know, but nothing gets warm on ppbus_g3h
So, on PPVCC S0 CPU (C1096) Pin 1 i get 13.8Ω
 
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leonattpcs

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Have you tried freeze spray any where on the board? Never tried it myself on a computer board as I have never head to yet.
 

menatwork

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dukefawks Any hint ? I take a look around the CPU and i can't find any bad caps or something like that.
I watch again a couple videos from larossmann about CPU short to ground, but no lucky.
 
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Punkedthis

New member
you can have a short but when you inject 12v on ppbus, how many amps/current is actually going in? 0.2a? 1a? 2a? or 0a?
 

menatwork

New member
Update: Q7130 Get really hot. I just replaced. But nothing change.
I have green light
7100 The resistance between pins 17 and 18 - 3.4 ohm
27 and 28 - 20 ohm
 
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