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XPS 15 7590 suddently stopped charging
XPS 15 7590
I exclusively used USB-C over the last year to charge the laptop and noticed the case next to the USB-C connector was getting hot. Now it is not charging at all anymore, also with the AC adapter.
However, the system runs fine on AC power on an empty battery.
So my take is that the charging circuits on the board are burned.
Obviously, this happened a few months after the warranty ran out. ;-)
Here is a pic of a main board section with a chip looking suspicious.
I would try to replace it if I could find which type it is and where to find it.
Anyone can provide this information please?
Or more pointers to the charging circuitry on the board?
Replacing the main board doesn't make sense anymore.
But I suppose the charging chips could be replaced, as they usually have lower degree of integration.
Or I could try to find a used XPS with a broken display....
Otherwise, it's just gonna be a laptop without battery for the rest of its life.
Thanks for any support :-)
ejn63
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June 4th, 2024 10:56
Just about the only source of a replacement part will be a donor mainboard of the same model -- these parts aren't commonly sold (though you might be able to order one from China; check) as single units. They're sold in thousands of units lots.
And you still have no way to reliably determine whether that's the only chip that's bad, or why it went bad in the first place.
Do you have a hot air rework station available to undertake the repair?
Proceed with a chip replacement only if you're in this for an experiment -- it is more likely to fail than work.
dr.UV
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June 4th, 2024 04:00
I made another pic and my guess its a UE1344 line driver, which would totally explain the failure.
https://lichtboxx.com/smd-ic-max1344-line-driver
any hardware experts around to confirm?
Since this is a simple SMD chip which can be bought for 20€ and replaced
(when there is no more support contract...)
dr.UV
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June 18th, 2024 00:44
@ejn63 thanks, a returned motherboard is good, but where to find such a board ?!?
The chip I found is also wrong, however, when I gonna travel to India again I will try my luck there.
So far I have a non battery XPS which is running, however slowly.
Usually, its just the power MOS FET which burn so I there is hope :-D
dr.UV
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June 18th, 2024 00:45
@dr.UV this is nonsense. the line driver chip is something else., but who can read the labels?