HP Envy 15 cannot charge battery!

[Tuomo]

Re: HP Envy 15 cannot charge battery!

no. from the none charging one, I do not have PQ10 on the charging one at the moment. I can do that in just over 1 hour if you need it

Can you please do for the charge working motherboard also I want to be sure.

[grahamw01]

Re: HP Envy 15 cannot charge battery!

Can you please do for the charge working motherboard also I want to be sure.

Okay pin 4 is as follows:

ac ON bat OFF : 19.23V
ac ON bat ON : 2V
ac OFF bat ON : 19.23V

are you sure that both PQ10 and PQ3 are the same? I recall swapping them once and it didn't work at all.. they may be swapped at the moment.

thanks

[Tuomo]

Re: HP Envy 15 cannot charge battery!

Okay pin 4 is as follows:

ac ON bat OFF : 19.23V
ac ON bat ON : 2V
ac OFF bat ON : 19.23V

are you sure that both PQ10 and PQ3 are the same? I recall swapping them once and it didn't work at all.. they may be swapped at the moment.

thanks

thanks to the measurement results. Those are very important.

I think you mixed ac ON bat ON : 2V and ac OFF bat ON : 19.23V ?

PQ10 and PQ3 appear to be identical FDS6679AZ by schematic.

Now we know for sure that the PQ10 control does not work.

We can begin to explore the control signals of PQ10.

Let's start with PQ49 PIN2 BATDIS_G should always be high when the AC adapter is in place.

Can you do same test as earlier?

[grahamw01]

Re: HP Envy 15 cannot charge battery!

so the results from the charging board are correct? do you have another source to compare to?

I will do the test tomorrow, anything else I should try? it is annoying that I can only test at work!

Thanks

[opamp]

Re: HP Envy 15 cannot charge battery!

Also check pin 2 of PQ45 it should be low.

[Tuomo]

Re: HP Envy 15 cannot charge battery!

so the results from the charging board are correct? do you have another source to compare to?

I will do the test tomorrow, anything else I should try? it is annoying that I can only test at work!

Thanks

If the case bottom readings are crossed as I presume those results are fully as they should.

PQ44 PIN2, PQ42 PIN2 and PQ45 PIN2 should be 0V when AC plug is ON.

[grahamw01]

Re: HP Envy 15 cannot charge battery!

If the case bottom readings are crossed as I presume those results are fully as they should.

PQ44 PIN2, PQ42 PIN2 and PQ45 PIN2 should be 0V when AC plug is ON.

sorry what do you mean bottom readings and crossed?

[Tuomo]

Re: HP Envy 15 cannot charge battery!

sorry what do you mean bottom readings and crossed?

The voltage should be 19V when the AC adapter is in place.

Your measure AC ON BAT ON = 2V ?

I think they are

AC OFF BAT ON = 2V.
AC ON BAT ON = 19V.
AC ON BAT OFF = 19V.

If board charge they have to be like this.

[grahamw01]

Re: HP Envy 15 cannot charge battery!

hmm I am pretty sure it is the way I said it, I can check again though..
Regards

[Tuomo]

Re: HP Envy 15 cannot charge battery!

hmm I am pretty sure it is the way I said it, I can check again though..
Regards

This detail is very important.

If the voltage is 2V PQ10 is open and the 19 voltage can go to Battery.

[grahamw01]

Re: HP Envy 15 cannot charge battery!

This detail is very important.

If the voltage is 2V PQ10 is open and the 19 voltage can go to Battery.

hmm, well like I said I was able to charge the battery fine using that motherboard. But I do not know what the state of the motherboard is now after playing around with it so much, and I am not sure if U33 was getting really hot before as well.

I dare not plug that motherboard in for more than a few seconds since U33 gets really hot, what do you think, should I see if it will charge the battery still? I don't want U33 to blow up on me though!

I checked the pins anyway when the battery is in and supposidely charging. pin 1 of the battery connector is 12.5V.

[Tuomo]

Re: HP Envy 15 cannot charge battery!

hmm, well like I said I was able to charge the battery fine using that motherboard. But I do not know what the state of the motherboard is now after playing around with it so much, and I am not sure if U33 was getting really hot before as well.

I dare not plug that motherboard in for more than a few seconds since U33 gets really hot, what do you think, should I see if it will charge the battery still? I don't want U33 to blow up on me though!

I checked the pins anyway when the battery is in and supposidely charging. pin 1 of the battery connector is 12.5V.

Ok. Can you recheck PQ10 PIN4 and remove AC plug? Charging board.

"are you sure that both PQ10 and PQ3 are the same? "

This have to check again to be sure.

Remove PQ10 and test pad PIN4. This for not charging board.

[grahamw01]

Re: HP Envy 15 cannot charge battery!

Ok. Can you recheck PQ10 PIN4 and remove AC plug? Charging board.

"are you sure that both PQ10 and PQ3 are the same? "

This have to check again to be sure.

Remove PQ10 and test pad PIN4. This for not charging board.

Sorry, you are completely correct, the values on pin 4 are;

AC OFF BAT ON = 2V.
AC ON BAT ON = 19V.
AC ON BAT OFF = 19V.

I will remove PQ10 from good board later today (4 hours)

thanks

[Tuomo]

Re: HP Envy 15 cannot charge battery!

Sorry, you are completely correct, the values on pin 4 are;

AC OFF BAT ON = 2V.
AC ON BAT ON = 19V.
AC ON BAT OFF = 19V.

I will remove PQ10 from good board later today (4 hours)

thanks

This looks much better, now we know what it should be.

When you remove the PQ10 and check PQ10 PIN4 pad.

If the voltage has the same function as before we can be sure that PQ10 not cause of the problem even if swap PQ3.

[grahamw01]

Re: HP Envy 15 cannot charge battery!

ignore message

[grahamw01]

Re: HP Envy 15 cannot charge battery!

pin 4 on removed PQ10 on good board bad charge:

AC OFF BAT ON = drops very slowly, settles around 1.1V.
AC ON BAT ON = 3.4V.
AC ON BAT OFF = 3.4V.

[Tuomo]

Re: HP Envy 15 cannot charge battery!

pin 4 on removed PQ10 on good board bad charge:

AC OFF BAT ON = drops very slowly, settles around 1.1V.
AC ON BAT ON = 3.4V.
AC ON BAT OFF = 3.4V.

Interesting, when AC ON PQ10 PIN4 should be 19V.

Next measure PQ49 PIN2, PQ45 PIN2.

PQ49 PIN 2 should be High when AC ON and Low AC OFF.

PQ45 PIN 2 should be Low when AC ON and High AC OFF.

You can leave PQ10 OFF not need put it pack yet.

If signals look OK you can remove PQ45 and check PQ10 PIN4.

[grahamw01]

Re: HP Envy 15 cannot charge battery!

Interesting, when AC ON PQ10 PIN4 should be 19V.

Next measure PQ49 PIN2, PQ45 PIN2.

PQ49 PIN 2 should be High when AC ON and Low AC OFF.

PQ45 PIN 2 should be Low when AC ON and High AC OFF.

You can leave PQ10 OFF not need put it pack yet.

If signals look OK you can remove PQ45 and check PQ10 PIN4.

Okay will check tomorrow, I feel we are getting closer to the answer! lol

[grahamw01]

Re: HP Envy 15 cannot charge battery!

Okay will check tomorrow, I feel we are getting closer to the answer! lol

This is what I get:

PQ45 same whether charging or not charging:

0V----0V
|______|
----|
--3.4V

PQ49 same whether charging or not charging:

0V----8.3V
|______|
----|
---0V

Sorry for the terrible drawings..

[Tuomo]

Re: HP Envy 15 cannot charge battery!

This is what I get:

PQ45 same whether charging or not charging:

0V----0V
|______|
----|
--3.4V

PQ49 same whether charging or not charging:

0V----8.3V
|______|
----|
---0V

Sorry for the terrible drawings..

No problems. Drawing is fine but i have to find which PIN is 2.

Is it AC OFF and AC ON or Battery ON and Battery OFF?