Screen Ghosting after Panel Replacement and Cleaning, Taping, etc.

My latest repair has me stumped. I've fixed three Minis (A1432) previously without too much drama. However, I can't fix digitizer ghosting on this one. I've used Kapton tape everywhere necessary, and I've even taped the cable in a few spots thinking that was the cause. There are ghost touches even when left laid open. What's really odd is it will be fine for 1 to 2 minutes and then start ghosting. Again this occurs even if the digitizer is left laid open and not on the frame/lcd panel. I've checked the connection ports multiple times. I've removed all debris and clean the screen multiple times.

I've done the following:

- Used Kapton tape on all exposed copper on the bottom of the device

- Double-checked the ports, no broken or bent pins

- Carefully installed the digitizer cable

- Used Katpon tape on the digitizer cable itself and parts

- Cleaned the screen/digitizer carefully

See for yourself: https://goo.gl/photos/wTjcAD2oweioCKfc6

Again, the screen will ghost even if it's laid open. It will work fine for 60 or 120 seconds then start going crazy.

Any thoughts?

I ordered a replacement digitizer from iFixit, which worked fine for a few minutes. After test fitting everything twice and making sure it was in working order I resealed the panel to the frame. Suddenly after a few minutes the digitizer suddenly stopped responding altogether. Oy!