Don't expect too much! Lenovo's Yoga 500 is another 2-in-1 convertible with a 14-inch screen on the market. It is supposed to continue the success of the Yoga series from last year. The Lenovo Yoga 500 is equipped with a Skylake Intel Core i5, and there are also configurations with a GeForce 920M GPU.
http://www.notebookcheck.net/Lenovo-Yoga-500-14ISK-Notebook-Review.160778.0.html
It's probably worth mentioning - in some markets (e.g. Czech, Poland, Estonia) the Yoga 500-14ISK comes with a 940M not a 920M.
Can you check the screen PWM flickering of N140HCE-EAA again? I found the review of same panel installed in Thinkpad L460 saying it didn't have PWM flickering (http://www.notebookcheck.com/Test-Lenovo-ThinkPad-L460-20FVS01400-Notebook.159534.0.html), but you have measured PWM flickering here.
I buy new yoga 500isk to very excited but i saw there display automatic off any time
this issue was not resolve because i visit cervice center 3 times then i found replacment to a new mahine.