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820-2530 blinking green light

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XooP

XooP

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I'm kind of stuck with this old 820-2530 board. When plugged in the light on the charger is blinking.
PPBUS_G3H i fluctuating between 3.5V and 11.5V, at least this is what i can read on my multimeter. I guess something makes the charger start and stop.
It does not run on either battery or charger.

Current sensing resistors measures fine.
If I remove F7000 or R7008 the blinking slows down.
If I remove both F7000 and R7008 I get solid green light and PPBUS_G3H is 12.5V.

There is no short to ground om PPBUS_G3H.

I have measured resistance to ground on both PPBUS_G3H and PP3V42_G3H and they are both very high.

I have replaced U7000.
I have replaced both Q7020 and Q7021.
I have replaced C7008.

I do need some pointers now, I feel I'm looking in the wrong place.
 
XooP

XooP

New member
Yes, ISL6258, DCIN fluctuates as well, so as long as I get the blinking, nothing else seems stable. VDD and VDDP fluctuates as well
 
XooP

XooP

New member
It was Wine damaged, but there was only slight corrosion around the audio chip as far as I could tell
 
XooP

XooP

New member
Nothing, when a fully charged battery connected I get 11.96V on PPBUS_G3H but it won't start. Battery indicator shows nothing.
 
D

dukefawks

Administrator
If the SMC is running and the BIL is good then it should show battery level. Check SMC_RESET and 3V42 and SMC_ONOFF.
 
A

Allstartek

Member
Checking SMC_RESET at R2072 pin 2 i get 0v checking SMC_ONOFF at R5170 pin 1 I get 3.42V

What is the BIL? also you said "check 3v42"

Checked ppv3v42_G3H at C5003 pin 1 3.4v C5009 pin 1 3.42V
Checked SMC_BIL_BUTTON_L at R5181 pin 1 3.42V
 
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