6 Posts
0
460
Dell 7590 XPS won't charge, 19v at DC in
Hi All,
I'm in the process of trying to help out a colleague. His XPS 7590 is a few months out warranty (naturally) and wasn't switching on at all.
After pulling the RAM I finally found that one of them was faulty. Its now out and the laptop will boot HOWEVER - it won't charge the battery at all. I've run a multimeter over it it's getting 19V @ the DC in on the motherboard.
Worth mentioning here that it also won't run unless the battery is connected - absolutely nothing with battery disconnected. Any thoughts? It sounds like the motherboard to me but i'm no IT support. Is there anything else I can check?
Cheers
Rob
ejn63
10 Elder
10 Elder
•
23.1K Posts
0
January 29th, 2023 07:00
If the system isn't drawing power from either and won't start, it is indeed likely a system board issue.
ejn63
10 Elder
10 Elder
•
23.1K Posts
0
January 28th, 2023 07:00
Go into setup (F2 at powerup) to make sure the adapter is detected and not showing unknown. If it is showing unknown, try another OEM Dell adapter next, and if that too is unrecognized, replace the DC jack:
https://www.parts-people.com/index.php?action=category&id=143&subid=1321&refine=dc+jack
only after that should you condemn the system board.
nicedellmate
6 Posts
0
January 28th, 2023 08:00
Under support assist it says, charger - unable to detect charger. I dont understand though, I can go and buy another charger, which i'm reluctant to do considering I just bought a new battery. But as I said in the original post, the DC in port on the motherboard is getting 19v, suggesting to me theres something going wrong further down the line, is that not a fair assumption?
ejn63
10 Elder
10 Elder
•
23.1K Posts
0
January 28th, 2023 08:00
Not necessarily as far as the battery charging is concerned. The center pin completes a logic loop that enables the system to sense the adapter. If it isn't sensed, the battery will not charge.
More concerning is the failure to power from the adapter. If you don't want to buy a new adapter, you can find most computer shops will have Dell adapters you can try. That won't absolve the DC jack of fault, but if a known working adapter won't power the system, it's then down to either the DC jack (sub-$30) or a faulty mainboard (likely $500 or more).
Does the system correctly identify the battery?
ejn63
10 Elder
10 Elder
•
23.1K Posts
1
January 28th, 2023 09:00
Check in setup - the battery information will show. F2 at powerup once again.
nicedellmate
6 Posts
0
January 28th, 2023 09:00
"Does the system correctly identify the battery?"
Sorry, dumb question, how do i check that?
nicedellmate
6 Posts
0
January 28th, 2023 10:00
Yer its picking up the battery accurately.
Think I might pickup the DC-in replacement first as it's far cheaper and I dont know anyone with a charger I can use to test.
nicedellmate
6 Posts
0
January 29th, 2023 07:00
Not getting any charge from the new charger or from USB charge...