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measured u7200 with battery and ac power 1 0v 2 0v 3 2.0v 4 3.32v 5 0v 6 0,725v 7 0v 8 3.2v 9 4.5v 10 0v 11 0v 12 0v 13 3,379v 14 2.0v 15 0v 16 12.59v 17 4.98v 18 0.062v 19 0v 20 0v 21 0v 22 4.51v 23 0v 24 0v suddenly pp3v3_s5 was shorted to ground so tried to insert 3.3v to the rail. After a...

Ok now Im back and so are the green light =) NO 3V3_S5 with battery and AC power. PBUS not dropping with battery in place 12.6V. No orange light.

lost the green light some how. not even plugged in the battery =) have to find out what missing

when I not touched the board for some time it will spike up to 12.4 and then drop down but now it just go up to 1.6v and then slowly down. Just have a multimeter to test with. It measures about 0.8V long time after disconnecting charger.

replaced TPS and also c7220 and c7220. still drops from 1.5v slowly to =´0 now measuring U7200 in diode mode pin1 0.546 2 0.695 3 0.656 4 0.622 5 0.013 6 0.549 7 0.472 8 0.625 9 0.571 10 0.0 11 0.122 12 0.436 13 0.702 14 0.665 15 0.0 16 0.449 17 0.489 18 0.496 19 0.443 20 0425 21 0.831 22...

No sign of water damage, R7220 was bad and changed. Diode mode L7260 0.431v L7220 0.124v

Now Im back from holliday =) Resistance 17/18 3.2ohm 27/28 20.5ohm voltage pin1 14.81v pin2 16.22 pin19 5.15 pin20 5.15 pin21 0v pin26 15.74 pin9 0.032v pin12 3.41

L7220 5.08 kohm L7260 22.5 kohm U7200 pin 8 dont get a value just counting up starting from 320 kohm pin 17 dont get a value just counting up

Im working on an really old 820-2879. No sign of water damage. Have green light but PPBUS_G3H starting at 6v and drops to about 1.5v. When battery connected its 12.8V and no drop but still no start and battery doesn't charge. Dont have any working board of this old crap to compare to. F7040...