I would check that the lcd cable isn't trapped or kinked under itself when plugged into the board. The iPhone 5 does exactly this when the cable isn't located spot on.

I did this over the weekend, took about 2 hours all told, as others have said cos the glass was shattered.

I found it very easy to just use a hairdryer to melt the glue enough to get the panel and digitiser off the chassis.

Unfortunately the home button is behaving a little oddly, and Im guessing its grounding out as it keeps kicking back to the home screen.

Ill report back when I have found out more.

Gavin.