New LCD not working. Tried 2. Can see Apple logo.

Hi All, I have replaced many iPhone 6 models with ease. This time I replaced the screen. The customer called me the next day and said her speaker (earpiece) and camera weren't working. Everything WAS working when I gave it to her. I figured it was the gold contacts.

I took the phone apart. Cleaned the sensors with rubbing alcohol. Put it back together. Powered it up. Speaker still didn't work. Proximity sensor DID work. Camera didn't work. Touchscreen DID work.

The phone started to get hot on the top so I shut it down.

I put another screen on and when I power it up I see a faint apple logo and faint number pad to enter the 4-digit code. I can hold down the power button and see the slider to power it off, but can not slide it with my finger. This happens when I switch back to the first replacement screen also.

Did my muck this thing up?!?!? I see people talk about a screw damage problem, but I did not get the screws mixed up. Even so, what is the solution when their is damage from a screw?

• I did a soft reset
  • I disconnected the battery and reconnected
  • It does get recognized by iCloud when I plug it in to a computer.

Any help is greatly appreciated and if you would like to respond with a partial answer and your contact information for me to send it to you, go ahead and F&$k right off!

Thanks!