Acer AO756 not charging battery

Lins_Laptops
Lins_Laptops Member Posts: 4 New User

I refurbish only Acer laptops, netbooks, and tablets for resale. I now have the 4th AO756 model netbook that shows it's charging, but the battery state of charge does not increase. On all 4, here's what I have tried:

 

1. Update bios to latest version

2. Tried a known good battery

3. Tried several known good AC adapters

4. Changed the mainboard

5. Removed battery and AC power, then held down the power button for 30 seconds, after that connected AC power & reinstalled battery, powered on.

 

NONE of these methods worked. Obviously, there is a common problem with this model, if I've had 4 of them and others on the forum have also had this problem. Since I am not the original purchaser of the units I refurbish, they are not covered under warranty.

 

Can someone PLEASE help me resolve this issue! I'm open to any suggestions. Thank you,

 

Lin dba Lins Portable PCs

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