No image, Radeon HD5500|Yamaha RX-V 1067|Benq w1060

Hello guys,

I have a problem with making a projector show an image, and I thought you might be able to help me.

These are the different units and how they look from the rear:
Radeon HD 5500
Yamaha RX-V 1067
Benq w1060

It is set up like this:
HDMI from HD 5500, to Yamaha RX-V 1067 in the port HDMI AV1
HDMI from Yamaha RX-V 1067 HDMI out 1, to Benq w1060 in port HDMI 1.

Is there anything I should be aware of when using a system like this? Compatibility or driver problems.

I am troubleshooting this for a friend. He mentioned it showing an image for a brief second, but now he is using DVI from graphics card to projector. It shows the image just fine, but it limits the use of the system in other regards, HDMI through the surround receiver would be optimal. This is all the information I have to go on for now.

Hope you can help me out