Can't get "Video Out" to projector

Keen1

macrumors newbie
Original poster
Nov 23, 2009
2
0
Trying to connect new 20" imac to HT system. *Checked the cables I'm using on other HT components and they work fine. *Have DTV, DVD and iMac connected to switchbox running to projector. *DTV and DVD work fine (as does audio from itunes). *Problem is that I get no video signal out from iMac. *I been told to "force video out" by selecting mirror display but it won't even give me that option under arrangement if there is not a second display detected. *I've got the mini display to component adapter from apple. everthing else going to switch box is component also. *I've tried turning on the pj before and after mac boot-up and before and after starting different videos. I've also tried bypassing the switchbox and running directly to pj. *Still, nothing. *Any ideas. *I'm new to the mac world. *Any suggestions would be most appreciated.

In case it matters, I've tried connecting to an Optoma EP749 and a Viewsonic Cine1000 with the same results. Curious if a "DVI-Detector" would solve the problem or if it would be required since I'm using a switchbox for all video to the pj?
 

akm3

macrumors 68020
Nov 15, 2007
2,252
279
Not sure why it isn't working, I would try to run mini to DVI and then convert DVI into HDMI or VGA for the projector, to see if that works.
 
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Keen1

macrumors newbie
Original poster
Nov 23, 2009
2
0
Pj has DVI port.....if that is the answer then so be it....only problem now is I don't have a 100' DVI cable or mini to DVI converter. This same setup worked fine with my PC. It did have a high end Graphics Card though. At this point I'm trying to figure out if it's a hardware or software issue. Wish I could manually force video out but I can't seem to even find the option until the imac detects something is connected.
 
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akm3

macrumors 68020
Nov 15, 2007
2,252
279
Pj has DVI port.....if that is the answer then so be it....only problem now is I don't have a 100' DVI cable or mini to DVI converter. This same setup worked fine with my PC. It did have a high end Graphics Card though. At this point I'm trying to figure out if it's a hardware or software issue. Wish I could manually force video out but I can't seem to even find the option until the imac detects something is connected.
The problem might be the cable is too long? If you are running a 100' component cable off of the adapter there might not be enough signal coming from the video card to lock onto the signal.

Is there anyway to test it with a shorter cable?
 
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