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I'm having trouble with connectivity issues between a Dell computer and my optima ex530 projector. It has worked fine at times, other times it won't connect at all, other times it connects for 10-15 m

I am having trouble with connectivity issues between a Dell computer and the Optoma ex530. It is used in a church for powerpoint presentations. Sometimes it works fine, other times we can't connect at all. Or it might connect, and then quit 10-15 minutes into the presentation. I suspect it's the computer, because the projector works flawlessly at home for any media presentations such as DVD, etc. Any answers?

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  • check the cable for any loose connections
  • try other cable
  • try other computer

Posted on May 03, 2009

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If you attach the VGA and just the projector(or external screen) is not working and your computer still works, it could be a settings option. Connecting it then going to Start>Control Panel> Hardware and Sound>Connect to a projector. Make sure "computer only" isn't marked.


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How about a little more information?
Does the projector turn on?
has it ever worked?
What type of interface (VGA, DVI, HDMI, RCA)
What type of computer (notebook or desktop)

That being said, double check your cable connections and make sure you tell your computer to look for the projector (Dell laptops used to use FN+F8 to switch from laptop to projector). Windows 7 has a menu choice "Connect to Projector". Mac computers - check system preferences and make sure the projector is ON before you plug it into the Mac.

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Reduce the screen resolution of your computer monitor to 800 x 600 and check. Let us know the result.
Optoma is a SVGA projector. i.e. the maximum resolution supported by your projector is 800 x 600.

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1 Answer

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Hmmmm... You sure should have an option in your Control Panel for that settings. Try exploring your "Screen Resolution" by right clinking on the Desktop, and clicking "Screen Resolution". There'll be options for "Detect" and "Identify". When you connect your Projector, try the "Detect" option and see if a new Display is detected. If there is, click on it and look for "Advanced Settings" and try to find the option for "Invert" or "Mirror" display or something like that.
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Sounds like the the monitor detect line is causing your issue. The Hitachi CP-X250 has VGA in & out. Hook the Dell to the VGA out port of the projector.

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The PC interigates the projector when it is booted, that is why it works when connected for the second time. If you connected it up and after waiting for the projector to boot, then boot the PC, it may well save you the trouble of resetting the resolution to match the projector.
Hope that helps.

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Is it time for a lamp replacement? perhaps a cleaning of the air filter? check these two before looking into a service for it.

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Video out


try to reconnect your cable of your projector just make sure that well-fitted on the port and screws are intact then to try to restart your laptop.ok?
if still doesn't work.just let me know!!

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Yes, I have the same problem with a Dell Inspiron 700m laptop. I have never been able to show videos using two seemingly compatible devices. This is not a projector issue however, as my projector displays video DVD fine from this PC, only videos inserted into PowerPoint will not play. Using another computer it works fine. Imagine that, Dell selling two highly practical devices that are not compatible.

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