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Old 02-01-2022, 04:48 PM   #4
mon2
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Default Re: Dell LA-C571P - Won't Charge - Battery 255%

Check the VFb (voltage feedback) pins on the charger IC. Use a battery with some charge if possible and check if the same voltage from the battery is reaching this IC.

What are the voltage readings for the battery connector ?

Are the contacts clean and the SMBUS pins are reaching the battery pack ?

Confirm that the SMBUS contacts are reaching the battery connector.

Confirm that the SMBUS contacts are reaching the charger IC.

That is, for both cases, after the resistors between these points of interest.
Attached Images
File Type: jpg Vfb.jpg (102.1 KB, 12 views)
File Type: jpg battery_connector.jpg (86.1 KB, 12 views)
File Type: jpg confirm_SMBUS_at_component.jpg (58.6 KB, 13 views)
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