iPhone 5 black screen and charging sound every 5 seconds...

[Hellolol2]

So a week ago my phone was doing fine until I decided to replace the battery as it had been dying at random percentages and I was fed up with it. I bought a replacement battery and replaced it but when I turned it on, the backlight would come on but no Apple came up. The sleep button would turn on the screen but you could not see anything if that makes sense. The phone was still working and Siri worked as well but taking out and placing back in the battery was not working. Some sources online said the LCD connector must've been displaced or something as I was replacing my battery and so I (unfortunately) messed with the screen and the connectors. After I had taken it off and placed it back on and tried to turn my phone on again, not even then backlight came on. The screen stays pitch black and when I plug it into the charger it makes a charging sound every couple of seconds. I've tried taking out the battery than placing it in, taking out the connectors and battery, just connectors, about every situation imaginable. But nevertheless, my phone is still in the same state. Black screen and charging sound every 5 seconds... I have a replacement battery coming my way again and I'll see if that fixes it.. By the way the screen is a replacement screen I had gotten because the original was cracked. I don't really want to pay $100 to get my screen fixed....