Dell G3 3579 LA-F611P Laptop not charging problem

[bhamra]

Hi,
I got one Dell G3 3579 Laptop not charging problem. laptops turns on shows charging sign but actually not charging.
works fine on battery as well.

Any Solutions?
Thanks in Advance

[mon2]

Could the battery be old? If available, suggest to simply replace the battery and test again.

https://www.badcaps.net/forum/troubl...arging-circuit

Start with the above article. Share more details of your laptop with full markings on the logic board. Ideally, link the schematic if one is available but only inside the dedicated schematic forum.

Plan B is to try to convince piernov to do an onsite repair. We have been trying for years...

Plan C is to continue this thread for more assistance. You will need a multimeter; soldering tools if parts need to be replaced; tweezers; flux; solder and patience.

Be sure that your power adapter is suitable for charging. Any liquid damage? What is the history of the unit?

[bhamra]

Could the battery be old? If available, suggest to simply replace the battery and test again.

https://www.badcaps.net/forum/troubl...arging-circuit

Start with the above article. Share more details of your laptop with full markings on the logic board. Ideally, link the schematic if one is available but only inside the dedicated schematic forum.

Plan B is to try to convince piernov to do an onsite repair. We have been trying for years...

Plan C is to continue this thread for more assistance. You will need a multimeter; soldering tools if parts need to be replaced; tweezers; flux; solder and patience.

Be sure that your power adapter is suitable for charging. Any liquid damage? What is the history of the unit?

Battery Seems fine as it is working on battery as well.
gone through schematic but couldn't diagnose the problem.
changed adapter as well. no liquid damage on motherbaord.

[mon2]

Remove all power. Meter in resistance mode. Measure the resistance from pin #1 to pin #2 on the charger IC at pub01. Measure directly at the charger ic pins.

What is the resistance in ohms?

Next, touch your meter probes together and share this 0 ohm measurement. This is your baseline of the lowest measurement of your meter. Need this value to gauge the others.

[bhamra]

Remove all power. Meter in resistance mode. Measure the resistance from pin #1 to pin #2 on the charger IC at pub01. Measure directly at the charger ic pins.

What is the resistance in ohms?

Next, touch your meter probes together and share this 0 ohm measurement. This is your baseline of the lowest measurement of your meter. Need this value to gauge the others.

It is 2.4

[mon2]

Not understanding the posted values. Can you share a pic of the front face of your meter? Be sure that you are in resistance (ohms; omega Greek symbol) mode on the dial.

Then touch one meter probe onto pin #1; other probe on pin #2 - the meter will report the resistance measurement for the path between these 2 points of initial interest. The measurement will be in ohms.

[bhamra]

Not understanding the posted values. Can you share a pic of the front face of your meter? Be sure that you are in resistance (ohms; omega Greek symbol) mode on the dial.

Then touch one meter probe onto pin #1; other probe on pin #2 - the meter will report the resistance measurement for the path between these 2 points of initial interest. The measurement will be in ohms.

It is 2.4

[mon2]

This resistance is ok and is the battery charger current sense resistor path.

Can you confirm the details of your power adapter? Is it the USB type C or standard barrel style power adapter? Regardless, they are of the Dell brand or another?

Are you able to power with only the power adapter? (no battery)

[bhamra]

This resistance is ok and is the battery charger current sense resistor path.

Can you confirm the details of your power adapter? Is it the USB type C or standard barrel style power adapter? Regardless, they are of the Dell brand or another?

Are you able to power with only the power adapter? (no battery)

It is Original standard barrel style power adapter. i have checked with another adapter as well.
I can power on with power adapter ( No Battery) and also only with battery.
Just the battery doesn't charge.

[mon2]

When you use the barrel style power adapter - what power rating of this adapter does the BIOS show?

About to take in my nightly Netflix binge watching but after the above check...test the voltage to ground of the PSID pin on the barrel jack connector @ PL3 ferrite bead.

Dell uses the 1-wire communication spec by Dallas Semiconductor / Maxim / Analog (in this order of who owns whom) - and this PSID line is used by the EC to determine the power rating of the Dell official power adapter. You cannot sub another unless it is 100% compatible with Dell.

If this line is missing, the power adapter will be assumed to be wimpy and the charging feature will fail and most likely will throttle the speed of your CPU. The BIOS will confirm what the adapter is or is not.

[bhamra]

When you use the barrel style power adapter - what power rating of this adapter does the BIOS show?

About to take in my nightly Netflix binge watching but after the above check...test the voltage to ground of the PSID pin on the barrel jack connector @ PL3 ferrite bead.

Dell uses the 1-wire communication spec by Dallas Semiconductor / Maxim / Analog (in this order of who owns whom) - and this PSID line is used by the EC to determine the power rating of the Dell official power adapter. You cannot sub another unless it is 100% compatible with Dell.

If this line is missing, the power adapter will be assumed to be wimpy and the charging feature will fail and most likely will throttle the speed of your CPU. The BIOS will confirm what the adapter is or is not.

it is being Detected as original 180W charger in bios. i have replaced the charger as well but same issue with another charger as well.
Getting 19.5 volt.

[mon2]

Is the battery the original and proper model for this laptop?