I've had the D3 and VTL300 hooked up for about 8 months. No issues. Out of the blue I have a blank screen. It still says "objects appear closer" but it will not work in reverse or when I select rear view. I took the HU and checked all connections. Everything looked solid. I unwrapped the electrical tape around the connectors back at the license plate and that looked fine. We have lots of rain over the last few days but my truck really has not been out very much in the rain. Has anyone had any defective Boyo's and if so how can I test it to find out just what has gone bad. I rechecked the ground and power and could not find any loose wires which is what I was hoping for... any ideas? TY in advance!

Im having the same problem. Did you ever figure it out?

The camera was bad. New camera fixed it... Boyo had no problem replacing the camera. Give them a call.