no response on dna after digitizer replacement topic

So I replaced the digitizer on my dna and afterwards I get no response from the phone. So I was thinking the screen was DOA, and I ordered another digitizer from a different seller on ebay and still got nothing. I plugged it into the pc to see if I could force it on, I did the hard reset, and stilll no response. All cables are perfectly fine and were cleaned with alcohol. Bought a new battery and still nothing. What could it be? Help please.