Can't get past the Apple logo at startup...

So I replaced the Lightning Connector and Display panel on my son's iPhone 5c. Now the iPhone won't boot up?

It gets stuck right after the Apple logo appears... then there's a series of lines of type that appears (like the kind you would see on a PC when you're on the "boot-up screen")...

The lines are so small I can't really read what says but it goes through several checks and gets stuck at the same place/line each time.

Has anyone seen this before?

I'm wondering if I damaged the Logic board or if it's a battery issue. The phone does get really hot... and I had trouble removing the battery and those combative adhesive strips (even with 4 or 5 rounds of heat bags to soften the adhesive)!!

So... I found out that one can do a "Recovery Mode" process using iTunes. The wanted to fix itself but it failed to first Update (saving your content) and secondly... it wouldn't even do a full Restore (erasing everything and reinstalling a fresh OS)... it kept resulting in error codes 4013 or 4005 each time I tried Recover Mode.

I'm so bummed.

It's my son's phone and I'm a truck driver and leave tomorrow for 2 weeks. My wife works too (6 days a week and does several different shifts) so my son needed the phone for communication with us and emergencies. I don't have the money to replace or even fix this phone! I'm at a loss!!

A Logic board will run me $150 and a new battery costs $30. I just spent $100+ and it still doesn't work...