Chosen Solution
I replaced my surface pro 2 screen/digitizer assembly as it was damaged. The unit was working prior to the replacement. Once the new screen was installed I tried to switch on the unit to check the screen was working. I charged it overnight. The unit will not switch on. The unit will not boot as it seems as if it is not getting power. I have tried holding down the power button for 30 sec and holding the power and volume up button to 15 secs, neither work. Please could somebody help. Dave
It could be that the LCD is not getting a signal try to rseat the flat cable to the connector at the logic board your could also try the HDMI adapter an see if it turns on with a external LCD
So I faced this issue and I found a solution that ther is adhesive holding the LCD flex cable, you have to remove it before you git it back to original place
