dell latitude 5320 no power

[steanta]

can someone help me with a dell latitude 5320 problem, it doesn't start all the time and doesn't charge, and when it starts, the start-up light comes on for a few seconds and then stops i have 5v 3v and 1.8v on pr4401 i have 4.3v ,it only takes 5v from the charger, it does not switch to 20v

[mon2]

Re: dell latitude 5320 no power

You are consuming only 190 mA which is too low of a current draw.

Any liquid spill?

Remove all power. Meter in resistance mode. Measure the resistance to ground of each inductor on the board. Perhaps a shorted cap is causing an excessive current draw. Is the schematic available? Do not post it here but do link it in the schematic forum.

[steanta]

Re: dell latitude 5320 no power

there are no traces of liquid, I don't have a short, from what I measured, from what I observed, apart from the bios chip, there is also a W25Q80DVSNIG chip, I don't know what it does

[mon2]

Re: dell latitude 5320 no power

The W25Q80DVSNIG flash may be used by the local EC IC which is often a 8051 style microcontroller and will fetch its firmware from a low density external memory device.