Lenovo Yoga 2 Pro NM-A074 not start

[ktmmotocross]

Hello.
Have this Lenovo Yoga 2 Pro that have all required voltages, it charges, all looks ok, but it absoluttely not react to power button. powerbutton have 3.3V and is regulary shorted to ground. i try to reflow ITE but nothing changed

any hint on this?

[mcplslg123]

Re: Lenovo Yoga 2 Pro NM-A074 not start

Check basic requirement of kbc first.