g7 power issue

[rookieme]

I have a HP g7 with DA0R33MB6F1 .
At first during usage it seemed to be connected to power but it really was discharging the battery [sometimes].
BIOS was updated to F26 with no result.
Now it runs only with a charged battery and if I connect the power I get an orange led that misinformes that battery is charging.
It cannot run without battery any more.
At PQ50 pin 3 I get 19V for a while and then nothing or the 11V of the battery if it is connected. [pin 4 has 19V]
Should I try changing PU9?

[ktmmotocross]

Re: g7 power issue

what about voltage on both sides of pr227 and voltage of acdet signal?

[rookieme]

Re: g7 power issue

at pr227 I get 24V but after connecting and disconnecting the battery I get 0,9V both sides.
acdet is 2,65V

[dycc]

Re: g7 power issue

Try to change pu9 bq738=bq728=bq735=bq725

[atsio]

Re: g7 power issue

Remove and check pq48 and pq50. Check resistance relative to ground on pins of pq48.

[rookieme]

Re: g7 power issue

Remove and check pq48 and pq50. Check resistance relative to ground on pins of pq48.

both of them seem to work ok.
resistance at pq48 [board only without pq48 and at 180 C temp]
1,2,3 ~ 1,5 Kohm
4 ~ 63 K
5,6,7,8 ~ 75 K

resistance at pq48 with it at low temp
1,2,3 ~ 300 Kohm
4 ~ 1 M
5,6,7,8 ~ 7,75 M

[rookieme]

Re: g7 power issue

could it be a bad solder somewhere as the problem is no permanet?
it works ok for a few seconds/ minutes and then it just hangs