Dell Inspiron 7520 - won't turn on, charger turns off when it's plugged into laptop

alfredbulbasaur

Estimable
Dec 28, 2015
8
0
4,510
0
Hi,

My laptop, a Dell Inspiron 7520 which I bought in April 2013, won't turn on all of a sudden. I was using it fine yesterday, went out today and when I got home and tried to use it it wouldn't switch on. The charger itself initially seems ok, green light comes on when it's plugged into the mains but when I plug it into my laptop it instantly turns off.

I'm guessing the problem is either with the charger or the laptop itself. I've tried a different plug going between the mains and the charger transformer, didn't help. Unfortunately I don't have another laptop with the same charger (my work laptop's charger is close but doesn't fit sadly) so can't test with that. I've tried taking the battery out and with the battery in, makes no difference.

I'm out of warranty with Dell, and although I've seen a replacement charger for £17 on Amazon I don't really want to spend that if it's not going to fix anything!

Any ideas?
 
I don't think you can repair the motherboard yourself, unless you are good at soldering integrated circuits. Dell will just change the motherboard, you can ask an evaluation for the repair. Or you can buy a used motherboard, but you have to disassemble the laptop to change the motherboard.
 

alfredbulbasaur

Estimable
Dec 28, 2015
8
0
4,510
0


just tried that, nothing happened

 

alfredbulbasaur

Estimable
Dec 28, 2015
8
0
4,510
0


Hi - yep that's correct. I'm guessing the battery is flat so I can't run off the battery, and as either the charger or something related to the power supply is busted I can't run off the mains - hence my problem!

 
The best way to troubleshoot the problem is to verify the voltage from the adapter at the connector inside the laptop. If you can't, to determine if the adapter or the motherboard who is defective, is to buy another adapter. You will know with the new adapter if the old adapter or the motherboard is the problem.
 

alfredbulbasaur

Estimable
Dec 28, 2015
8
0
4,510
0


makes sense - how would I do that?
 

alfredbulbasaur

Estimable
Dec 28, 2015
8
0
4,510
0
I've now got a new adapter and that hasn't solved the problem - the adapter light turns on when I plug it into the mains, turns off as soon as I plug it into my laptop, and turns back on as soon as I unplug it from my laptop.

Guess that means it's the laptop that's at fault here! Any idea what the issue could be, other than a dead motherboard?
 

alfredbulbasaur

Estimable
Dec 28, 2015
8
0
4,510
0
is this going to be the sort of thing I can replace myself (bear in mind I am not an expert by any means) or do I need to get someone to do it for me? Am I best off contacting Dell and seeing if they can fix it rather than messing about myself?
 
I don't think you can repair the motherboard yourself, unless you are good at soldering integrated circuits. Dell will just change the motherboard, you can ask an evaluation for the repair. Or you can buy a used motherboard, but you have to disassemble the laptop to change the motherboard.
 
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