• HP Probook 440 G3 Orange Light Blink 9 times

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HP Probook 440 G3 Orange Light Blink 9 times

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#1 HP Probook 440 G3 Orange Light Blink 9 times

by cygron • 14 March 2025, 07:34
Model : HP Probook 440 G3
Board id: DAX61CMB6C0 REV-C

When connect adapter laptop automatically open but no display (picture) and charging led blink orange light 9 times.
PL24 - 5V
PL25 - 3.3V
PL28 - 1.8V
PL15 - 1V
All other coils have 0V.

Laptop can't open with DC supply. I use 65W HP original adapter to test.
CN5 pins have
Pin 1, 2 -20V
Pin 3, 4 - Ground
Pin 5 - 5V
Pin 6 - 4.36V
Pin 7 - 3.6V
Pin 8 - 3.26V

Need help.

Re: HP Probook 440 G3 Orange Light Blink 9 times

by Google Adsense [BOT] • 14 March 2025, 07:34

#3 Re: HP Probook 440 G3 Orange Light Blink 9 times

by cygron • 15 March 2025, 09:49
PU8
Pin 2, 4, 7, 10 - 0V
Pin 8 - 3.3V
Pin 11 - 5V
Pin 18 - 5.5V

Resistance to ground on the coils at 0V
PL15 - 40 Ohm
PL14 - 9 Ohm
PL17 - 4.3 Ohm
PL18 - 4.1 Ohm

#5 Re: HP Probook 440 G3 Orange Light Blink 9 times

by cygron • 15 March 2025, 14:00
No. PL30 have 0V.

#7 Re: HP Probook 440 G3 Orange Light Blink 9 times

by cygron • 16 March 2025, 06:50
Resistance to ground of PL30 is 157 Ohm.

#9 Re: HP Probook 440 G3 Orange Light Blink 9 times

by cygron • 21 March 2025, 17:02
I replace PU8. For now laptop doesn't turn on. So i test resistance to ground on coil PL30 again and found 0.5 Ohm. Remove coil PL30 and inject 1V to shorted side, APU is hot. I think APU is damage now. Am i right?

Re: HP Probook 440 G3 Orange Light Blink 9 times

by Google Adsense [BOT] • 22 March 2025, 10:50
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