After frame(includes screen) replacement

5 minutes after turning on this message appears "Device overheating powering down". I've taken it apart and back together several times being very careful with cables and seating of connectors, with no joy.

I then put my old frame back on and the same thing happens. Watched every YT video I could find but didn't get any clues. Hoping someone out there has seen this?

Thanks,

Ed

603-318-6262