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820-4924 no PPBUS_G3H

S

Sr. Robot

Member
PPBUS_G3H is 0.5v, diode mode to ground is 0.113.

removed F7140, PPBUS_G3H is 0v. Removed L7130 still no PPBUS_G3H

PP3V42_G3H diode mode is 0.256


U7100 basic voltages (F1740 and L7130 removed)

1 = 0v

2 = 16.5v

3 = 4v

9 = 0v

12= 0v

13 = 0v

14 = 0v

15 = 0v

17 = 0v

19 = 5.5v

20 = 5.5v

27 = 16.2v
 
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S

Sr. Robot

Member
R7020 measures good. D7005 was odd looking and replaced it just in case. Now i get the same voltages but PPDCIN_G3H is more stable (only pulsing for about 0.1v).

Q7010 and U7090voltages remain the same
 
S

Sr. Robot

Member
But now the battery is not charging.

Tried good battery, no change.

If battery is connected it tas a while for green light to come on, some times i have to reconnect it several times for light to come up.

After boot, if i disconnect the charger, the laptop goes to sleep. Battery not detected by OS (no battery icon or system info)

PPBUS_G3H is 12.2v (without battery), 12.2v (with both charger and battery), and 11.78 with only battery.

SCL and SDA diode mode to ground is 0.453

CHGR_A/BMON are 0v with and without battery connected.

battery bus voltages:
w/battery:
SCL: 0.9v
SDA: pulsing to 3.4v

w/o battery: same behaviour

Pins 17/18 of U7100 is 3.9 ohms. 27/28 is 20.1 ohms
 
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