Hi everybody,

Lately my Laptop an HP Probook 450G3 stopped charging the battery, in the diagnostic it says blown fuse, change battery
I bought a new battery but this dis not resolve the problem, so I started digging but did not manage to find the right brd file, All the files I found on the net using the Quanta board name : DA0X63MB6H1 REV:H lead to a wrong file that is clearly not my board

Does any one have already deal with such problem on a 450 G3, could you please give me hints on where to start troubleshooting

Thanks in advance

check bq24780s voltages.
pdf bq24780s - google.

Hi jocker,

Thank you for your reply, my thought had already led me to that chip, I tested :
VCC = 19V
BATDRV, BATSRC and BTST are at battery voltage at 14.5V,
ACDRV is at 24V,
CMSRC = 19V
REGN = 6V
BATPRES(inv) = low, so battery detected
TBSTAT(inv) = 17mV

Could you please help me on how to do further tests, I'm not a professional in any kind in repair field and I'm doing that to repair my own laptop

Is there any chance that you have the correct brd file that could help me alot finding test points :)

Best regards

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Posted after 2 hours 53 minutes 45 seconds:
Here is an addendum to my previous post showing the actual position of the PQ24780s on my board

Versus its positoin and surrounding component that I found on the brd file available on the net


Than you a lot for your help

incorrect brd or another revision.
smd around bq !

Yes sure that the brd file that I have is wrong
Here is a picture of my board number
Do you have a brd file that has the same smd layout as mine around PQ ?

What's your opinion about my measurements do they seem right to you ? do you know on which pin does the PQ order to the MOSFET to charge the battery ?
Thanks in advance
BR