Charger caused 2 laptops to fail?

[redskies]

I bought a replacement charger for my acer aspire laptop, I checked the compatability and correct voltage etc.
I plugged it in the light on the charger came on, after a minute or so my laptop cut out and so did all the laptop lights.
Stupidly I thought maybe it wasnt the charger but my battery, so I tried another battery (from my partner's acer laptop). Nothing. I then made a fatal mistake - I tried the replacement charger on my partner's laptop... It cut out and now both are completely dead, no lights, nothing.
The charger also made popping noise (after I disconnected the second laptop)
The charger was bought from a big eBay seller, though they had good feedback, I think must be dodgy.
What could it be??? If it's something that needs to be re-set I'm sure my partner could fix it, but my worry is the motherboards have been fried

[joeten]

Hi and welcome to TSF ac adapters are best replaced with the exact same model from the maker after market do not always perform as stated,what ac adapter did you buy and when you say it popped did it stop working,have you tried removing all power including the battery from the laptop and then holding down the power button for 45 seconds

[redskies]

Thanks, the adapter is identical to the original acer one except without the LITEON logo.
When it popped it wasnt connected to laptop so I dont know if it stopped working. Didnt sound healthy so I just unplugged it.
I removed power/battery and tried to drain internal battery, no effect.

[joeten]

Model of laptop please,and model of ac adapter it should have a label on it with the info, did you try the second laptop and have you tried the correct ac adapter with the second laptop

[Learn2day]

FYI, LITEON is official acer laptops charger.

[redskies]

Laptops: aspire 5520g and 6920g. Adapter: p/n:ap.a1003.001

I have tried the correct ac adapter with both laptops.

[redskies]

Originally Posted by Learn2day

FYI, LITEON is official acer laptops charger.

If I buy another I will stick to LITEON but this depends on whether the laptops can be fixed

[joeten]

Is it a 19v 3.42amp 90w or a 4.7 amp
see here for liteon Acer 90watt Power Adapter Only - £35.23 : Acer Spare Parts

[redskies]

19v 4.74A

[joeten]

given that it meets the original spec it should not have been a real problem the question now is is it defective see if the troubleshooting steps here can assist you Black Screen Issues and Troubleshooting
also see this AC/DC Power adapter >> Laptop Parts 101