820-3476 Charging Light Blinks with Battery Connected

Hi
I have Motherboard 820-3476, Board is working fine with battery or Direct with charger but If battery is connected then it's start blinking like cutting of power.
Replaced U7100 ISL6259, Checked R5380,R5381, No Corrosion so far.
Any Suggestions
 

2informaticos

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Post exact PPBUS_G3H voltage with charger only (no battery).
Check resistance between pins 17/18 and 27/28 of U7100.
 
PPBUS_G3H voltage with charger only (no battery) 20V which should be around 12.4V
Resistance between pins 17/18 is 4.3 Ohm and 27/28 is 21Ohm of U7100.
 
R/C7125 are Good.
After Replacing Q7130 Problem Solved, I got nice 12.54V and Solid Light on Charger with Battery

Thank You So Much
Problem Solved
 
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