I have a 2018 Fiesta with Sync 2.5. I fitted a rear camera which worked well. A few weeks later I had a problem with the heater and removed the screen to check that there were no disconnected wires etc and in the process broke the connector on the screen which was then black when reconnected. I then replaced the screen (K1BT-18B955-FC) with another (K1BT-18B955-FD) but I still have a black screen and only the radio works. I tried a soft reset, removing the fuse for a few minutes and leaving the car locked for a few hours but still a black screen. I have run FORScan and get no errors. I also tried resetting the ACM but nothing. Any suggestions or advice on what else I can try.

Resolved - although the part numbers for the screen were the same - apart from the last letter - the replacement screen was apparently from a car with sat nav and when it was replaced with a screen from a non sat nav car everything worked. I would like to thank staff at scb-vehicledismantlers (on eBay) based at Newbridge near Edinburgh who not only sourced a replacement screen but were also able to confirm that the screen would work with my Fiesta.