I had similar codes (same first 3) with my E7450, started with 0x0380818A about a year ago. Then the On button couldn't reliably turn on. Then the battery couldn't charge.
I diagnosed it down to one of the output capacitors shorted in the switching power supply for charging the battery, and a PMOS FET that leaked to cause the gate voltage to not reliably turn on.
This laptop has got design problems. The caps were underated, for the battery voltage. A good EE would have derated those ceramic caps a great deal, due to the bias voltage derating the capacitance significantly. And that MOSFET looks cheap (vendor), and its gate bias circuit is a joke!
Now I am starting to see similar codes, a year after I replaced the shorted cap and the leaky MOSFET. I am beginning to think that my recent upgrading of 1TB Crucial MX500 SSD randomly restarting Win10 issue is actually this E7450 mother board power issue again.
With the randomly restarting I would make sure you go to your bios and turn of c states. as your motherboard and stuff gets older electricity wont be delivered as well so when c states is kicked in if enabled it will shut off or restart your computer because of in efficient power delievery. This problem happens on both laptops and desktops
designflaw
12 Posts
0
December 24th, 2019 22:00
@KBSLAT what did you find out about these?
I had similar codes (same first 3) with my E7450, started with 0x0380818A about a year ago. Then the On button couldn't reliably turn on. Then the battery couldn't charge.
I diagnosed it down to one of the output capacitors shorted in the switching power supply for charging the battery, and a PMOS FET that leaked to cause the gate voltage to not reliably turn on.
This laptop has got design problems. The caps were underated, for the battery voltage. A good EE would have derated those ceramic caps a great deal, due to the bias voltage derating the capacitance significantly. And that MOSFET looks cheap (vendor), and its gate bias circuit is a joke!
Now I am starting to see similar codes, a year after I replaced the shorted cap and the leaky MOSFET. I am beginning to think that my recent upgrading of 1TB Crucial MX500 SSD randomly restarting Win10 issue is actually this E7450 mother board power issue again.
Dell please hire some good EE's.
Odin_hutson
10 Posts
0
September 16th, 2022 11:00
With the randomly restarting I would make sure you go to your bios and turn of c states. as your motherboard and stuff gets older electricity wont be delivered as well so when c states is kicked in if enabled it will shut off or restart your computer because of in efficient power delievery. This problem happens on both laptops and desktops