Hi, I have followed all the instructions in this guide with the correct iFixit tool and new digitizer and the IPad won't turn on or charge. I have tried recovery mode and left it to charge for a while. I didn't have any trouble with any of the steps, I used the battery blocker and the new digitizer fits perfectly with the home button. So everything has gone to plan - except that it won't turn on. Any recommendations on troubleshooting here?