Had it fitted by SteveP several months ago. Since then, it's been brilliant. A couple of times, it's not worked but this is rectified if you select reverse a second time.
Yesterday it was fine in the morning but in the afternoon, it didn't work and it's still not working today. If I select reerse gear, you can hear the mechanism working (and the camera pops out). The screen changes to the camera screen but it's blank. Plain black except for the menu on the roght which allows you to alter contrast, brightness etc.
Running 2720 (I think, or at least latest FW) sice Dec '10, RNS v B.
Any ideas?