I have a Yoga 500 - 14IBD.
The problem with "Plugged in not charging" started about a month back.. the charge remaining in the battery was about 98% then. Over a period of time it came down to 40%. In the last month, I tried a variety of solutions suggested in various forums.. Looking at those solutions and comments on those solutions, each solution seems to have worked for some people, but has not worked for many. None of those helped me...
I am not sure if my solution that I am giving below will work for others.. but here it is
https://support.lenovo.com/in/en/solutions/ht103159
If you open the above link, there are two methods detailed. Method 1 had not worked for me.
In method 2, the first step was to update BIOS. I did this and it worked... Please do try if this works..
HOW TO UPDATE BIOS.
Please be careful when updating BIOS. Do check your Laptop model number and update accordingly. If you are not sure, please get to a technician
The steps I took
1. Search in lenovo support site for "how to check BIOS version" and "How to update BIOS"
2. I checked my BIOS version on my laptop currently
3. I went to Lenovo site and put my serial number
https://support.lenovo.com/in/en/
In the above webpage, please put your laptop serial number - It will let you know you laptop model and other information
On the top, there are menu items. Please select "Drivers and Software"
Choose the "operating system". For me it was Windows 10.
Under "component" I chose was "BIOS/UEFI"
Click on the DOWN arrow (under downloads). It will show you the latest version of BIOS.
In my case, I noticed that the version in my laptop was different from the latest version available
I downloaded the file.
Then I "ran the file" - it installed the BIOS update program. This program has a great user interface with the right instructions. Just follw the instructions, and you will have the latest BIOS. Hope that will solve the "Plugged in Not charging" issue
Please Note: As you would realise this solution is from "Lenovo Support site" and not something new that I found out. I have just tried to detail it out a bit..