[SOLVED]820-3115 - 15V on PPBUS_G3H

pws6074

New member
Guys,

Before the computer is pretty dead.
So, right now works fine, however, the PPBUS (just the charger plugged) i get 15V ( 60W original charge)
If i plug the battery with the charger, the green light start blinking.
If i plug just the battery without the charger, i get 11.89V on PPBUS.

So, did you guys any clue what happen?
Thank you
 

pws6074

New member
R7005, R7021/22/51/52- All ok
The charger is a 100% original.

Q7035:
Pin 5 = 16V
Pin 4 = 0V

Q7030
Both Sides 16V

ISL6259 - I don't replace yet.
CHGR_PHASE - 16V ( but is 12V on the schematic )
 
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smiba

New member
Dead ISL then with possible dead Q7030/35 like duke said. Lets us know how it works after replacing the ISL
 

smiba

New member
Resistance of PPDCIN_G3H_CHGR to CHGR_PHASE in Ohms?
Voltage of CHGR_UGATE?

You probably have a dead Q7030 and this may have killed the new ISL again as well
 
Last edited:

dukefawks

Administrator
You must replace the ISL and Q7030/35 all at the same time. Also check the feedback resistors and traces, R7021/22/51/52.
 
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