10-09-2019 11:48 AM
Today I replaced a broken screen hinge on my Yoga 15 but after reassembly the device does not switch on anymore.
When I hit the power button the i LED on the ThinkPad logo comes on for about 3 seconds, no activity on screen or fan and then switches off again.
When I plug in the power the i LED flashes twice and the third blink is cut short (like 2 1/2 blinks).
I have already tried the following things
- unplugging AC, battery and CMOS battery (with 60+ seconds pwr button hold thereafter)
- unplugging and replugging HDD, SSD, RAM banks, screen connectors coming from left and right hinge
- holding pwr button with battery and/or AC for 60+ seconds
- pressing pwr 10 times in rapid succession before press/holding for 60 seconds
I'm at a loss what else I could try or what I could have possibly done wrong during the hinge replacement.
Any advice is desparately welcome