Chosen Solution

Anyone have experience with a damaged thermal plate? Replacement screen/digitizer did not come with a thermal plate so I transferred from the broken screen. New screen lights up when connected but when I plug in the thermal plate cable the screen goes black. When I unplug it the screen comes back on. Will a new thermal plate fix this?

I would go back through this guide to be certain that it was assembled properly. It might be pinching the small backlight flex, which you can see in Step 21 next to the tweezers.