Boot Loop after lightning port replacement

Hello,

I just finished a replacement of the lightning port on an iPhone 7. It now attempts to boot but flashes off an immediately back on (like its cycling re-boot sequences. I’ve rechecked that all connections are seated properly.

Here are a couple of small places I feel like it *may* have gone wrong? First, I had trouble plugging the speaker and microphone connections back in place. They are seated now but…that was a challenge. Second, I mistakenly plugged the battery back in before I had re-connected the screen. Could this have shorted a battery connection?

Its not a software issue as iTunes won’t recognize it, nor will my MacBook.

Could it possibly be a logic board malfunction? I’ve read this is common in the iPhone 7 but I don’t have the setup to check or repair a logic board. Is it worth attempting to replace the logic board or….should I just find a used iPhone 7 replacement?

Any suggestions kindly appreciated .