WIll not power up

[Jester89]

Hello, this is my first time here. I received my Pine 64 a week ago and it powered up just fine. After getting familiar with the os that came with it I decided I wanted to try Mobian. After creating the jump drive and after installing the new os the battery had died. It was not charging in the phone so I bought an external battery charger and was able to fully charge the battery. I put the battery into the phone and it does not power up. I am at a loss as to what to do next. I have been wanting this phone for a long time and now its a brick. Can any one advise me on how to get this phone working again?