White Screen Of Death

Hey guys, so I ordered a new digitizer, and I noticed it didn't fit, the phone was working fine BTW, so I picked my old digitizer, connected everything back in place and tested the phone - it was working, but I noticed the smudges and dust behind the screen, so I decided to clean it. So I cleaned everything up, connected everything back, but suddenly what I had was a white screen ( It only shows up when the phone boots up ) I tried soft reset ( Home and power button ), restoring it to iTunes, pulling out the board for an hour and it didn't fix the problem, any suggestions ? Or I have to throw this phone out ?