HELP Dell Inspiron 15 Gaming 7567 BBV00 BBV10 LA-D993P r1.0

[luzvel64]

I need help with this Laptop, the problem is that it does not detect the charger.

when I started to check there was no voltage 3.3 in PQ100, I replaced it. now I have 3.3 in PQ100 and also in the KBC but the charger still does not detect me.

I don't know what else to continue reviewing, someone who can support me I would greatly appreciate it.

[mon2]

Re: HELP Dell Inspiron 15 Gaming 7567 BBV00 BBV10 LA-D993P r1.0

Measure all voltages on PQ100 with the adapter connected.

Post the measurements.

One temp hack is to remove PQ100 and bridge the source & drain pins. See if that works.

[luzvel64]

Re: HELP Dell Inspiron 15 Gaming 7567 BBV00 BBV10 LA-D993P r1.0

Measure all voltages on PQ100 with the adapter connected.

Post the measurements.

One temp hack is to remove PQ100 and bridge the source & drain pins. See if that works.

thanks for answering, in PQ100 I have:
pin 1 drain 3.3v
pin 2 gate 5v
pin 3 surce 3.3

With the charger connected
when I turn it on, the drain voltage is unstable and then drops back to 3.3v.

[luzvel64]

Re: HELP Dell Inspiron 15 Gaming 7567 BBV00 BBV10 LA-D993P r1.0

One temp hack is to remove PQ100 and bridge the source & drain pins. See if that works.

I remove PQ100 and bridge between source and drain. but it does not recognize any charger

try with and without PQ100

[mon2]

Re: HELP Dell Inspiron 15 Gaming 7567 BBV00 BBV10 LA-D993P r1.0

Are you using the official and recommended power adapter for this Dell ?

It is important so that the logic board can communicate with the power adapter using the single-wire PD_ID communication line.

If yes, you can review the operation without the TVS diode @ PD100 to see if this makes a difference.

Next, remove all power -> meter in resistance mode. Check the resistance between the actual power adapter connector pin for PD_ID (Pin #4) and the mosfet @ PQ100 (drain, pin # 1). What is the resistance ?

After the above, only left down to the EC controller @ UE1 (MEC1404) that may be defective OR UH8 flash firmware storage for the MEC needs to be reflashed.

[luzvel64]

Re: HELP Dell Inspiron 15 Gaming 7567 BBV00 BBV10 LA-D993P r1.0

Are you using the official and recommended power adapter for this Dell ?

It is important so that the logic board can communicate with the power adapter using the single-wire PD_ID communication line.

If yes, you can review the operation without the TVS diode @ PD100 to see if this makes a difference.

Next, remove all power -> meter in resistance mode. Check the resistance between the actual power adapter connector pin for PD_ID (Pin #4) and the mosfet @ PQ100 (drain, pin # 1). What is the resistance ?

After the above, only left down to the EC controller @ UE1 (MEC1404) that may be defective OR UH8 flash firmware storage for the MEC needs to be reflashed.

I'm sorry for the delay in doing the tests you suggested.

yes, I have the original charger, I have tried it on another computer and it works correctly

I have removed PD100 and the problem continues.

The resistance between the PQ100 drain and connector pin for PD_ID (Pin #4) is 68 ohms.

I'm going to try to reprogram UH8

[mon2]

Re: HELP Dell Inspiron 15 Gaming 7567 BBV00 BBV10 LA-D993P r1.0

The resistance between the PQ100 drain and connector pin for PD_ID (Pin #4) is 68 ohms.

The resistance should be closer to ~33 ohms = PR114.

Double check that the resistor @ PR114 is not damaged. Also measure the resistance from PL106, pin # 1 to pin # 4 of the adapter connector.