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I recently replaced the LCD screen and after putting it back together it doesn’t turn on when the battery is connected. When i disconnect the battery cable the screen lights up and the battery icon shows up. When i plug it back in the LED light flashes three times and nothing happens.

Is this whilst plugged into a power source? Was the battery disconnected before the repair?

Same problem. Didn’t leave the battery connected when I did the job, no. Any solutions?

Also having this problem. Was all working fine until I disconnected the battery to replace it. :/ Now it will look like it is charging with the red LED, but not actually turn on :/

anyone found solution for this?

replace the battery work 100%

I just replace my battery too. Not working. Dont waste your money. Buy new one.

http://forum.xda-developers.com/xperia-z

The flex cable connector is not fully seated. It worked out.