Thunderbold to HDMI ---> HDMI Switch ---> Saeco projector = No Video I've the following hardware and a problem getting things work. 


projector Sanyo PLV-Z800
DeLock 87498 HDMI 1.3 Switch 
MacBook Pro 2010 just with miniDisplay Port
MacBook Pro 2011 with Thunderbold Port
Lenovo ThinkPad with normal Displayport


When I try to connect my (3) MacBook Pro 2010 through my (2) HDMI Switch to my (1) projector everything works fine. 

Problem: 

When I try to connect my (4) MacBook Pro 2011 through my (2) HDMI Switch to my (1) projector I don't get a signal on my projector.  

When I try to connect my (5) Thinkpad through my (2) HDMI Switch to my (1) projector I don't get a signal on my projector either.

I've tried to find out which hdmi versions my hardware is working with.


The Projector seems to have the HDMI version 1.3b
The HDMI Swtich seems to have the HDMI version 1.3
I don't know, which versions my Macbooks have


Is there anyone who can tell me if my Switch is problem? So I just want to know if the HDMI version 1.3 doesn't support the newer standards. 

Can anyone recommend me a nice and affordable HDMI Switch where my setup will work with. 
I want to buy this one: Aten CS1792 HDMI KVMP Switch (2-polig, 2x HDMI, 2X USB).
There are no real differences between HDMI 1.3 and 1.3b so I would blame either the switch (most likely), the cables (do you have the correct ones for each device), or even the configuration settings on each machine.


If you plug each one into the projector individually do they work? If so, it is your switch that is at fault.
If not, try replacing the cables and connect each one to the projector - does this solve the problem? If so, the cables were the problem.
If not, check your configuration settings for the display on each machine.