Help! My charger light blinks when its in my Laptop. and my laptop wont charge - Page 2

Followup, and hopefully my last post in thread:

I replaced and installed the new DC jack, and though it doesn't make particular sense to me, I haven't had the problem since (approx 18 hours).  From what I can tell, the assembly looks like a standard, 2-conductor (i.e. one hot and one ground) jack (5.5mm ext., 1.7 or 1.8mm int, female) with no additional circuitry.  Four leads (two red and two black) come out the back, and loop through a noise-attenuating / inductor jammy (technical term), with no further circuitry apparent.  The leads (insulated 24-28 AWG, I'd guess) terminate in a 4-pin female plug.  I haven't multimeter'd it yet to check for resistance/continuity.

Looking closely at the inner barrel of the jack, a dozen small scorch marks on the plastic and metal are visible-- almost certainly small arcs that I'd heard if I connected the plug to the lappy AFTER connecting the transformer/brick to the AC.

Now I'm curious about the continuity and resistance.  I'll post when I get around to it.

For the record, the part I used cost $4.42 on ebay, with "free" first-class USPS shipping.  I prefer to buy from domestic (US) vendors-- no nationalism, just don't like to wait!-- so I likely could have gotten it for a few cents less if it had shipped from China.  I chose ebay vendor "meditechny", based on their 99.4% feedback.  

the item is # 400260231948, and the price DROPPED to $4.39!!!  I should demand a refund!!!

Nope, 100% satisfied, and I'll post the same on ebay.

step 1; chek output charge with multimeter, and the result  must 20V , 3A (normal)

step 2; chek plug in charge, ( laptop slot in charge)

step 3; fix it, or replace it

from eve digital service

I've had the same exact problem with my Acer Aspire 5552. After much monitoring, i have determined that it is simply an emergency "fuse" method used by the Acers. Basically when the laptop is overheating, it refuses to bring in more power (heat) to prevent the Lithium battery from exploding (which they are prone to do). A good method to allowing your laptop to receive the charge again is to put it in hibernation for 5-10mins and make sure that there is air space underneath as well as around your laptop.

     -I hope this helps! 

     -Luc (Lucskywalk75)

there's a short on motherboard component [ usualy the FET or MOSFET or capasitor ] in the power rail..you sould check every component in power block using the multitester to find the short component and replace it....