DELL INSPIRON PS_ID PROPLEM AND FIX

[ash91]

Hi
I had a nice dell laptop yesturday,the proplem was it is not charging...
i try another orginal charger with no luck also another battery no change either
the famus massage that the ac adapter wattage in not reconize by the laptop always show at the boot
in the bios the ac adpters is unkhown
so it is a motherboard issu, first i download a boardview to know what i am abut to deal with
then i extract the motherboard to start trace the voltage
the 19.5 line was ok but the ps_id was 4.2v it shuld be 3.3
the signal came from super io chip so that where i start and gladly it was 3.3v
then it go to pin numper 1 on PD5 then to pin numper 1 on PR3 and pin numper 2 on PR4
until here every thing was ok
next the signal go to PQ6 and here was the proplem, on pin numper 3 it was 3.3v which is normal
but on pin numper 2 the voltage was 4.2 insted of 5 casuing the rest of circute to fail
by replace PQ6 the voltage staple at 3.3 on ps_id pin on charging connector and the laptop is charging again
i hope this informations became useful to you

[mcplslg123]

The most common issue on dell's

[Maung Naing]

Thank you for your clear explanation of ps_id line.